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A Practice · From Noah to the Upper Room
From Noah's first stones to the altar where believers still kneel to seek the Holy Ghost, an altar has always meant the same thing: a place where a life is given to God. Here is what it truly means to build one, in the oldest history we can trace and in the deepest truth of the gospel.
Before You Read
The Hebrew word for altar, mizbeach, means "a place of slaughter," a place where a life is offered to God.
God commanded simple altars of earth or unhewn stone, so no human craftsmanship could add to His work.
Archaeology has uncovered ancient Israelite altars, including horned stone altars, confirming the biblical picture.
At the altar men "called upon the name of the LORD," so it was a place of prayer and worship as well as offering.
Sin was confessed and laid on the offering; the true sacrifice God wanted was a broken and contrite heart.
"We have an altar" (Hebrews 13:10). Jesus is our sacrifice, our altar, and our way to God.
Step Into the Moment
The ground was still soft from the flood when Noah began to gather stones. One by one he set them in a heap, rough field stones, uncut and unshaped, the way they came from the earth. He laid wood across the top, and on the wood an animal, clean and unblemished, given up out of the little that had survived. Then fire, and smoke, and the smell of the offering rising into a sky that had nearly drowned the world. It was the first thing Scripture says he built. Not a house. Not a wall. An altar. Before Noah made a home for himself, he made a place to meet God.
"And Noah builded an altar unto the LORD... and offered burnt offerings on the altar" (Genesis 8:20). To understand what he did, and what it still means for us, we have to go back to the very word.
The Word Itself
The Hebrew word for altar is mizbeach, and it comes from the verb zabach, "to slaughter, to sacrifice." So the word itself means, quite literally, "a place of sacrifice," a place where a life is offered up. That is the heart of what an altar is. It is not first a piece of furniture or a decoration; it is the spot where something dies so that a person can come near to God. From the very beginning, to build an altar was to say, "Here I will give a life to God, and here I will meet Him."
This is why the altar is bound up with the whole story of the Bible, because the deepest problem between God and man is sin, and "it is the blood that maketh an atonement for the soul" (Leviticus 17:11). A life given in the place of a life forfeited: that is the meaning stamped into the very name of the altar, and it points, from the first page, toward the cross.
As Far Back as We Can Trace
Offering to God is as old as the human family. Cain and Abel brought their offerings at the very dawn of the race (Genesis 4:3-4), and though the word "altar" is not used there, the practice was already understood. The first altar named in the Bible is Noah's, built the moment he stepped off the ark (Genesis 8:20). After him, the patriarchs marked their whole journey with altars. Abraham built one at Shechem, another at Bethel where he "called upon the name of the LORD" (Genesis 12:7-8), another at Hebron (Genesis 13:18), and the great altar on Mount Moriah (Genesis 22:9). Isaac built one at Beersheba (Genesis 26:25); Jacob at Shechem and Bethel (Genesis 33:20; 35:7). Wherever God met them, they built an altar to remember it and to worship.
Notice what these earliest altars were not. They were not grand temples or ornate shrines. They were simple heaps of stone or mounds of earth, thrown up by a traveler's own hands in an open field. An altar could be built anywhere God met a person. It required no priesthood yet, no building, no wealth, only a heart that would give something to God and call on His name.
How God Said to Build One
When God finally gave instructions, they were strikingly plain:
"An altar of earth thou shalt make unto me... in all places where I record my name I will come unto thee, and I will bless thee. And if thou wilt make me an altar of stone, thou shalt not build it of hewn stone: for if thou lift up thy tool upon it, thou hast polluted it."Exodus 20:24–25 KJV
An altar of earth, or of stones exactly as they came from the ground, uncut, unshaped, untouched by a tool. The moment a man lifted a chisel to "improve" the stone, God said, he had polluted it. Why? Because the altar was about what God does, not what man contributes. Human skill, human craftsmanship, human pride, had no place in the meeting between a sinner and his God. Salvation is God's work; man adds nothing to it but the sin that made it necessary. God even forbade steps up to the altar (Exodus 20:26), so that no one would exalt himself in approaching. Everything about the altar preached humility: come as you are, add nothing of your own, and let God meet you.
A historical note. Archaeologists have uncovered ancient horned stone altars at Israelite sites such as Beersheba, along with altars at Tel Dan, Megiddo, Arad, and others, showing the practice was very real and very old. Interestingly, the large horned altar found at Beersheba was made of cut stone, against the law of Exodus 20:25, and had been taken apart and its stones reused in a wall, likely during a king's reforms that removed unauthorized worship (compare 2 Kings 18:4). The very fact that such an altar was dismantled shows the biblical standard was known and enforced. And when the Jews rebuilt the temple altar after it was defiled in the days of the Maccabees, they were careful to use "whole stones according to the law" (1 Maccabees 4:47), uncut, just as Exodus commanded, a rule the historian Josephus also records for the temple altar.
What Really Happened There
To make an altar was never only to build a structure; it was to do something at it. Three things belonged to the altar from the beginning, and they answer directly the questions people ask about it.
Sacrifice. First and always, a life was given. The worshiper brought an offering and, in the case of sin, "put his hand upon the head" of the victim (Leviticus 1:4), identifying with it: this dies in my place. The altar was where substitution happened, where the innocent died for the guilty.
Repentance. Yes, the altar was a place of repentance. On the Day of Atonement the high priest confessed "all the iniquities of the children of Israel" over the offering (Leviticus 16:21), and every sin offering was an admission of guilt brought to God. But the outward sacrifice was never enough by itself; God always looked for the heart behind it: "The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, thou wilt not despise" (Psalm 51:17). To come to the altar was to come confessing sin and seeking mercy.
Prayer. Yes, the altar was a place of prayer. From the start, building an altar and "calling upon the name of the LORD" went together (Genesis 12:8; 13:4). And God appointed a second altar in the tabernacle, the golden altar of incense, whose rising smoke was a picture of prayer: "Let my prayer be set forth before thee as incense" (Psalm 141:2). Where there was an altar, there was a voice lifted to God.
Where Every Altar Was Pointing
Every altar ever built was a shadow, and the substance is Jesus Christ. There is one God, and He came to us in the flesh to be our Saviour, for "God was manifest in the flesh" (1 Timothy 3:16). On the cross He was, all at once, the sacrifice slain, the priest who offered it, and the altar on which it was given. That is why the New Testament can say, "We have an altar, whereof they have no right to eat which serve the tabernacle" (Hebrews 13:10). Our altar is not a heap of stones; it is the cross of the Lord Jesus, where the true and final sacrifice was made once for all.
This is the heart of the Apostolic, Oneness faith: not three persons, but one God, the LORD Jesus Christ, who was the offering, the offerer, and the meeting place between God and man. Every rough stone altar in the field, every drop of blood on the tabernacle altar, every rising cloud of incense, was God's way of teaching the world to look for the day when He Himself would provide the Lamb and become our way to the Father.
The Altar Now
Since Jesus has offered the final sacrifice, we no longer build altars of stone or slay animals. Yet the altar has not vanished; it has moved inward and upward. The New Testament calls believers "an holy priesthood, to offer up spiritual sacrifices, acceptable to God by Jesus Christ" (1 Peter 2:5), and it names those sacrifices: our very selves, "present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service" (Romans 12:1); and our worship, "the sacrifice of praise to God continually" (Hebrews 13:15). To "build an altar" today is to give yourself wholly to God, laying your life on the altar of full surrender.
And here the ancient altar meets the Apostolic experience. Just as men once tarried at the altar, so the Lord told His disciples to "tarry... until ye be endued with power from on high" (Luke 24:49), and there, waiting on God, they were filled with the Holy Ghost. This is why, in Apostolic worship, "the altar" is a place people come to repent, to pray, to surrender, and to seek and receive the Holy Ghost. Does the altar include praying in the Spirit? Indeed it does. Believers are told to be "building up yourselves on your most holy faith, praying in the Holy Ghost" (Jude 20), and the Spirit Himself joins that prayer: "the Spirit also helpeth our infirmities... the Spirit itself maketh intercession for us with groanings which cannot be uttered" (Romans 8:26). At the altar of surrender, the Spirit of the one God fills us, prays through us, and draws us near.
So what does it mean to build an altar today? Throughout Scripture, an altar is a place of meeting with God. It is where people worship, surrender, repent, pray, and dedicate themselves to Him. In the Old Testament, that often involved sacrifice. Under the New Covenant, Christ became the final sacrifice once for all (Hebrews 10:10-14), and believers now offer themselves to God as "a living sacrifice" (Romans 12:1).
Building an altar today is not about arranging stones or finding a particular location. It is about setting apart time and place to seek God with a surrendered heart. It is where we repent with a broken and contrite heart, call on the name of Jesus, pray, worship, and yield ourselves to His will.
The rough stones Noah built in a field and the quiet place where a believer kneels today serve the same purpose: they are places of encounter with the living God. You do not need a temple to build an altar. You need a surrendered heart, the name of Jesus, and a willingness to lay your life before Him.
For You
Noah's first act on a new earth was to build an altar. The patriarchs marked every meeting with God the same way. The question for us is whether there is a place, a time, a habit, an altar, in our lives where we give ourselves fully to God. It does not have to be elaborate. God asked for unhewn stones on purpose; He wants no impressive performance, only a heart that comes as it is and holds nothing back.
So make your altar. Set apart a place and a time to meet God. Bring your sin there and confess it. Bring your voice and call on the name of Jesus. Lay your very self on it as a living sacrifice, and ask to be filled with His Spirit. The God who came down in fire on Noah's stones and filled the upper room with the Holy Ghost is the same God still, and He has promised, "in all places where I record my name I will come unto thee, and I will bless thee."
Carry It With You
Romans 12:1 KJV
"I beseech you therefore, brethren, by the mercies of God, that ye present your bodies a living sacrifice, holy, acceptable unto God, which is your reasonable service."
For the Historical Notes
Scripture is quoted from the KJV. Historical and archaeological details are drawn from the biblical text and standard, well-established sources.
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