Deuteronomy 27:5

New English Translation

Then you must build an altar there to the Lord your God, an altar of stones – do not use an iron tool on them.

Cross References

1 Kings 6:7

As the temple was being built, only stones shaped at the quarry were used; the sound of hammers, pickaxes, or any other iron tool was not heard at the temple while it was being built.

Exodus 20:25

If you make me an altar of stone, you must not build it of stones shaped with tools, for if you use your tool on it you have defiled it.

Exodus 24:4

and Moses wrote down all the words of the Lord. Early in the morning he built an altar at the foot of the mountain and arranged twelve standing stones – according to the twelve tribes of Israel.

Deuteronomy 27:6

You must build the altar of the Lord your God with whole stones and offer burnt offerings on it to the Lord your God.