Deuteronomy 27:5

"Moreover, you shall build there an altar to the LORD your God, an altar of stones; you shall not wield an iron tool on them.

Exodus 20:25

'If you make an altar of stone for Me, you shall not build it of cut stones, for if you wield your tool on it, you will profane it.

Exodus 24:4

Moses wrote down all the words of the LORD Then he arose early in the morning, and built an altar at the foot of the mountain with twelve pillars for the twelve tribes of Israel.

Joshua 8:30-31

Then Joshua built an altar to the LORD, the God of Israel, in Mount Ebal,

1 Kings 18:31-32

Elijah took twelve stones according to the number of the tribes of the sons of Jacob, to whom the word of the LORD had come, 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
Moses wrote down all the words of the LORD Then he arose early in the morning, and built an altar at the foot of the mountain with twelve pillars for the twelve tribes of Israel.
Joshua 8:30
Then Joshua built an altar to the LORD, the God of Israel, in Mount Ebal,
1 Kings 18:31
Elijah took twelve stones according to the number of the tribes of the sons of Jacob, to whom the word of the LORD had come, saying, "Israel shall be your name."

Thou shalt not

Exodus 20:25
'If you make an altar of stone for Me, you shall not build it of cut stones, for if you wield your tool on it, you will profane it.