Verse-by-Verse Commentary
The Book of Numbers
Chapter 21: The Serpent of Brass Lifted Up
When the people murmur once more and despise the bread of heaven, fiery serpents come among them, and many die. God's remedy is strange and wonderful: a serpent of brass lifted up on a pole, so that everyone who simply looks upon it lives. Jesus Himself points to this moment as a picture of His own cross. From there the journey turns hopeful, with a song over a well of water and the first great victories over Sihon and Og. This is the chapter of the uplifted serpent, the look that saves, and a people beginning at last to possess.
About This Commentary
This is a verse-by-verse study of Numbers chapter 21. For each section you will find the KJV text, the Hebrew words that sharpen the meaning, plain explanation, and a Gospel Focus. The chapter tells of the fiery serpents and the serpent of brass, the song of the well, and the victories over Sihon and Og. At its heart is one of the clearest pictures of the cross in all the Old Testament, a picture Jesus claims as His own. Every Scripture quotation is from the King James Version.
Setting the Stage
Fiery Serpents
The people despised the manna and spoke against God, and fiery serpents came among them, and many died.
Look and Live
A serpent of brass was lifted on a pole, and everyone who looked upon it lived, a picture of the cross.
Spring Up, O Well
At Beer, God gave water, and Israel sang over the well, joy replacing the murmuring of before.
Sihon and Og
God delivered the Amorite kings into Israel's hand, and the people began at last to possess the land.
The Serpent of Brass Lifted Up (Numbers 21:4-9)
When fiery serpents came among the murmuring people, God gave a remedy of pure grace: a serpent of brass lifted up, so that everyone who looked upon it lived.
Every One That Looketh Shall Live
"And when king Arad the Canaanite, which dwelt in the south, heard tell that Israel came by the way of the spies; then he fought against Israel, and took some of them prisoners. And Israel vowed a vow unto the LORD, and said, If thou wilt indeed deliver this people into my hand, then I will utterly destroy their cities. And the LORD hearkened to the voice of Israel, and delivered up the Canaanites; and they utterly destroyed them and their cities: and he called the name of the place Hormah. And they journeyed from mount Hor by the way of the Red sea, to compass the land of Edom: and the soul of the people was much discouraged because of the way. And the people spake against God, and against Moses, Wherefore have ye brought us up out of Egypt to die in the wilderness? for there is no bread, neither is there any water; and our soul loatheth this light bread. And the LORD sent fiery serpents among the people, and they bit the people; and much people of Israel died. Therefore the people came to Moses, and said, We have sinned, for we have spoken against the LORD, and against thee; pray unto the LORD, that he take away the serpents from us. And Moses prayed for the people. And the LORD said unto Moses, Make thee a fiery serpent, and set it upon a pole: and it shall come to pass, that every one that is bitten, when he looketh upon it, shall live. And Moses made a serpent of brass, and put it upon a pole, and it came to pass, that if a serpent had bitten any man, when he beheld the serpent of brass, he lived. And the children of Israel set forward, and pitched in Oboth. And they journeyed from Oboth, and pitched at Ijeabarim, in the wilderness which is before Moab, toward the sunrising. From thence they removed, and pitched in the valley of Zared. From thence they removed, and pitched on the other side of Arnon, which is in the wilderness that cometh out of the coasts of the Amorites: for Arnon is the border of Moab, between Moab and the Amorites. Wherefore it is said in the book of the wars of the LORD, What he did in the Red sea, and in the brooks of Arnon, And at the stream of the brooks that goeth down to the dwelling of Ar, and lieth upon the border of Moab. And from thence they went to Beer: that is the well whereof the LORD spake unto Moses, Gather the people together, and I will give them water."
Hebrew Study
"looketh," nabat (נָבַט). Nabat means to look intently, to gaze, to turn the eyes toward. The remedy required no strength, no work, only a look: nabat, to turn the eyes toward the uplifted serpent and live.
"fiery," saraph (שָׂרָף). The serpents were saraph, "burning ones," so named for their fiery, burning venom. The name records what the bite felt like, a fire running through the body, and it measures how helpless the dying were: nothing in the camp could draw out what the serpents had put in.
Explanation
Discouraged "because of the way," the people "spake against God, and against Moses," complaining there was no bread and no water, and "our soul loatheth this light bread," despising the manna, the very bread of heaven. So "the LORD sent fiery serpents among the people... and much people of Israel died." Stricken, they confessed, "we have sinned," and begged Moses to pray. God's remedy was startling: "Make thee a fiery serpent, and set it upon a pole: and it shall come to pass, that every one that is bitten, when he looketh upon it, shall live." Moses "made a serpent of brass, and put it upon a pole," and "if a serpent had bitten any man, when he beheld the serpent of brass, he lived." No medicine, no struggle, no work; only a look. The dying had one thing to do: turn their eyes to the uplifted serpent, and live.
Gospel Focus
Jesus Himself unlocks the meaning of this scene: "as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up: that whosoever believeth in him should not perish, but have eternal life" (John 3:14-15). The uplifted serpent is a picture of Christ on the cross. The serpent was the emblem of the curse and of sin, and it was lifted up in the form of that which was killing them, just as Christ, who knew no sin, was "made a curse for us" (Galatians 3:13) and lifted up bearing our sin. And the way of salvation is the same: a look of faith. Every Israelite had been bitten, just as all have sinned; and the remedy was not to fight the serpents or treat the wound, but simply to look and live. So salvation is not by our works or our striving, but by looking to the crucified Christ, "look unto me, and be ye saved, all the ends of the earth: for I am God, and there is none else" (Isaiah 45:22). The dying man who could do nothing else could still turn his eyes. If you have been bitten by sin, you need not struggle to save yourself; look to the One lifted up, and live. And beware making the symbol an idol, as Israel later did until Hezekiah broke it (2 Kings 18:4); the serpent saved no one on its own, it was the God who gave it, and the Christ it pointed to, who saves.
Spring Up, O Well (Numbers 21:10-20)
At Beer, where God promised water, Israel gathered and sang over the well, a song of joy and faith where once there had been only murmuring.
The Song of the Well
"Then Israel sang this song, Spring up, O well; sing ye unto it: The princes digged the well, the nobles of the people digged it, by the direction of the lawgiver, with their staves. And from the wilderness they went to Mattanah: And from Mattanah to Nahaliel: and from Nahaliel to Bamoth: And from Bamoth in the valley, that is in the country of Moab, to the top of Pisgah, which looketh toward Jeshimon. And Israel sent messengers unto Sihon king of the Amorites, saying, Let me pass through thy land: we will not turn into the fields, or into the vineyards; we will not drink of the waters of the well: but we will go along by the king's high way, until we be past thy borders. And Sihon would not suffer Israel to pass through his border: but Sihon gathered all his people together, and went out against Israel into the wilderness: and he came to Jahaz, and fought against Israel. And Israel smote him with the edge of the sword, and possessed his land from Arnon unto Jabbok, even unto the children of Ammon: for the border of the children of Ammon was strong. And Israel took all these cities: and Israel dwelt in all the cities of the Amorites, in Heshbon, and in all the villages thereof. For Heshbon was the city of Sihon the king of the Amorites, who had fought against the former king of Moab, and taken all his land out of his hand, even unto Arnon. Wherefore they that speak in proverbs say, Come into Heshbon, let the city of Sihon be built and prepared: For there is a fire gone out of Heshbon, a flame from the city of Sihon: it hath consumed Ar of Moab, and the lords of the high places of Arnon. Woe to thee, Moab! thou art undone, O people of Chemosh: he hath given his sons that escaped, and his daughters, into captivity unto Sihon king of the Amorites. We have shot at them; Heshbon is perished even unto Dibon, and we have laid them waste even unto Nophah, which reacheth unto Medeba. Thus Israel dwelt in the land of the Amorites. And Moses sent to spy out Jaazer, and they took the villages thereof, and drove out the Amorites that were there. And they turned and went up by the way of Bashan: and Og the king of Bashan went out against them, he, and all his people, to the battle at Edrei."
Hebrew Study
"well," be'er (בְּאֵר). A dug well, a source of water. The place was named Beer, simply "the well." Where God had said, "Gather the people together, and I will give them water," Israel came, and the water sprang up. The same people who had murmured for water now sang over it, calling on the well to spring up.
Explanation
The journey continues, and at a place called Beer, "the well," God said, "Gather the people together, and I will give them water." And here something new happens. Instead of murmuring for water as they had done at Meribah, "Israel sang this song, Spring up, O well; sing ye unto it." The princes and nobles dug the well "by the direction of the lawgiver, with their staves," and the people sang over it in joy. It is a small, bright moment in a hard book: a song where there had been complaint, thanksgiving where there had been grumbling. The water God provided was met not with a demand but with a melody. The generation that would inherit the land was learning, at last, to respond to God's provision with worship rather than complaint.
Gospel Focus
The song of the well is a lovely picture of the joy of the Spirit welling up in a believing heart. Water in Scripture often speaks of the Spirit, and Jesus promised that in those who come to Him would be "a well of water springing up into everlasting life" (John 4:14). What a contrast to Meribah: there the people struck out in strife and demanded water; here they gathered in faith and sang the water up. The difference is the difference between murmuring and worship. When God's people learn to respond to His provision with singing rather than complaint, the wilderness itself begins to blossom. There is also a quiet lesson in the digging: the nobles dug "with their staves," working even as they sang, for faith and effort are not enemies. God gave the water, and the people dug the well; His provision and their glad labor met in a song. Let the well spring up in you, the joy of the Spirit, and answer God's goodness not with grumbling but with a song.
Sihon and Og: Beginning to Possess (Numbers 21:21-35)
When the Amorite kings came out against Israel, God delivered them into Israel's hand, and the new generation began at last to possess the land.
Fear Him Not
"And the LORD said unto Moses, Fear him not: for I have delivered him into thy hand, and all his people, and his land; and thou shalt do to him as thou didst unto Sihon king of the Amorites, which dwelt at Heshbon. So they smote him, and his sons, and all his people, until there was none left him alive: and they possessed his land."
Hebrew Study
As Israel nears the land, God begins to give the victories: "Fear him not: for I have delivered him into thy hand." Sihon king of the Amorites and Og of Bashan — the giant whose iron bedstead was legendary (Deuteronomy 3:11) — fall before Israel, and their lands east of Jordan become the first inheritance. These conquests were sung for generations as proof of God's power (Psalm 135:10-11; 136:19-20). The God who fights for His people turns even dreaded giants into a delivered possession.
Explanation
Now the tide turns. Israel asked Sihon king of the Amorites for peaceful passage, as they had asked Edom, but Sihon "would not suffer Israel to pass," and instead "gathered all his people together, and went out against Israel." This time Israel fought, and "Israel smote him with the edge of the sword, and possessed his land." Then Og the king of Bashan, a giant of a man, came out to battle. God spoke a word of courage: "Fear him not: for I have delivered him into thy hand." So Israel "smote him, and his sons, and all his people, until there was none left him alive: and they possessed his land." The generation that had trembled at giants and refused to enter now began, under God, to conquer kings and take territory. The long wilderness was giving way to the first taste of the inheritance.
Gospel Focus
These first victories mark a turning: a new generation, believing God, begins to possess what the fearful generation had forfeited. The contrast is striking. Forty years earlier, ten spies saw giants and called themselves grasshoppers; now Israel faces Og, an actual giant king, and God says, "Fear him not: for I have delivered him into thy hand." The giants had not shrunk; the difference was faith. When God's people believe Him, the very obstacles that once terrified them fall before them, for "if God be for us, who can be against us?" (Romans 8:31). The word "fear him not" is God's constant encouragement to His advancing people; the battle is His, and the victory is given. And notice that possession came through faith joined to obedient action: Israel believed God and drew the sword, and God delivered the enemy into their hand. So we press against the strongholds that stand between us and God's promises, not in our own strength, but knowing the Lord has already delivered them into our hand. The grasshopper generation died in the wilderness; the believing generation takes the land. Fear not the giants; the God who slew Og goes before you.
A Note on History
A serpent of bronze or copper as a sacred object is exactly the kind of thing archaeology has recovered from this period. At Timna, in the Arabah, Nelson Glueck's excavation of an Egyptian mining shrine uncovered a small copper serpent dating to roughly the twelfth century BC. Israel's memory of Moses' bronze serpent was long: centuries later King Hezekiah destroyed it, because the people had begun to burn incense to it and called it Nehushtan (2 Kings 18:4), the very reference this commentary notes.
Chapter 21 in Review
Numbers 21 turns from judgment to hope. When the people despised the manna and spoke against God, fiery serpents came among them, but God gave a remedy of grace: a serpent of brass lifted on a pole, so that "every one that is bitten, when he looketh upon it, shall live." Then, where once they had murmured for water, Israel sang over the well at Beer, "Spring up, O well." And God gave the new generation their first great victories, over Sihon and over the giant Og, saying, "Fear him not: for I have delivered him into thy hand," as Israel began to possess the land.
For the Apostolic reader, this chapter is centered on the cross. The uplifted serpent is the very picture Jesus claimed: "as Moses lifted up the serpent in the wilderness, even so must the Son of man be lifted up." The Christ who "knew no sin" was made a curse for us and lifted up, and the way of salvation is a look of faith, "look unto me, and be ye saved." The song of the well is the joy of the Spirit welling up where murmuring once reigned. And the victories over Sihon and Og show a believing generation possessing what unbelief had forfeited, for the giants fall when God says, "Fear him not." Look and live, let the well spring up in joy, and go forward to possess the promise, fearing no giant, for the Lord has delivered them into your hand.
- The uplifted serpent is Christ on the cross: "even so must the Son of man be lifted up" (21:8-9; John 3:14-15).
- Salvation is a look of faith, not our works: "look unto me, and be ye saved... for I am God, and there is none else" (21:8; Isaiah 45:22).
- The symbol must point to Christ, not be worshiped, as Israel later learned (21:9; 2 Kings 18:4).
- The song of the well pictures the joy of the Spirit welling up where murmuring once reigned (21:17; John 4:14).
- A believing generation possesses what unbelief forfeited; giants fall when God says, "Fear him not" (21:34; Romans 8:31).
Questions for Reflection
- Have you looked in faith to the Christ lifted up on the cross, ceasing from your own efforts to be saved?
- Does the well of the Spirit spring up in you with a song, or has murmuring taken its place?
- What giants stand between you and God's promises, and will you go forward believing He has delivered them into your hand?
References & Sources
Scripture is quoted from the King James Version (KJV). The Hebrew terms are standard and can be checked in any Hebrew lexicon. Supporting passages are listed so every claim can be verified in its own setting. If anything here does not look right, a verse, a reference, or a wording, please tell us at info@FruitBearers.net. Thank you for helping us keep Bible Learning error free.
- A copper serpent from Timna (N. Glueck) and Hezekiah's Nehushtan: 2 Kings 18:4.
- The serpent of brass and the cross: Numbers 21:4-9; John 3:14-15; Galatians 3:13; Isaiah 45:22; 2 Kings 18:4.
- The song of the well and the joy of the Spirit: Numbers 21:10-20; John 4:14.
- Victory over Sihon and Og, and possessing the promise: Numbers 21:21-35; Romans 8:31.