Deuteronomy 27:5

And there shall you build an altar unto the LORD your God, an altar of stones: you shall not lift up any iron tool upon them.

Exodus 20:25

And if you will make me an altar of stone, you shall not build it of hewn stone: for if you lift up your tool upon it, you have polluted it.

Exodus 24:4

And Moses wrote all the words of the LORD, and rose up early in the morning, and built an altar at the foot of the mountain, and twelve pillars, according to the twelve tribes of Israel.

Joshua 8:30-31

Then Joshua built an altar unto the LORD God of Israel in mount Ebal,

1 Kings 18:31-32

And Elijah took twelve stones, according to the number of the tribes of the sons of Jacob, unto whom the word of the LORD came, saying, Israel shall be your name:

Treasury of Scripture Knowledge

Summary

And there shalt thou build an altar unto the LORD thy God, an altar of stones: thou shalt not lift up any iron tool upon them.

Thou shalt not

Bible References

And there

Exodus 24:4
And Moses wrote all the words of the LORD, and rose up early in the morning, and built an altar at the foot of the mountain, and twelve pillars, according to the twelve tribes of Israel.
Joshua 8:30
Then Joshua built an altar unto the LORD God of Israel in mount Ebal,
1 Kings 18:31
And Elijah took twelve stones, according to the number of the tribes of the sons of Jacob, unto whom the word of the LORD came, saying, Israel shall be your name:

Thou shalt not

Exodus 20:25
And if you will make me an altar of stone, you shall not build it of hewn stone: for if you lift up your tool upon it, you have polluted it.