Deuteronomy 27:5

New American Bible - revised edition

and you shall build there an altar to the Lord, your God, an altar made of stones that no iron tool has touched.

Cross References

1 Kings 6:7

The house was built of stone dressed at the quarry, so that no hammer or ax, no iron tool, was to be heard in the house during its construction.

Exodus 20:25

But if you make an altar of stone for me, do not build it of cut stone, for by putting a chisel to it you profane it.

Exodus 24:4

Moses then wrote down all the words of the Lord and, rising early in the morning, he built at the foot of the mountain an altar and twelve sacred stones for the twelve tribes of Israel.

Deuteronomy 27:6

You shall build this altar of the Lord, your God, with unhewn stones, and shall offer on it burnt offerings to the Lord, your God.