Deuteronomy 27:5

Holy Bible: Easy-to-Read Version

Also, use some stones there to build an altar to the Lord your God. Don’t use iron tools to cut the stones.

Cross References

Exodus 20:25

But if you use stones to make an altar, then don’t use stones that were cut with an iron tool. If you do that, it will make the altar unacceptable.

Exodus 24:4

So Moses wrote down all the commands of the Lord. The next morning he got up and built an altar near the bottom of the mountain. And he set up twelve stones—one for each of the twelve tribes of Israel.

Deuteronomy 27:6

You must not use cut stones to build the altar for the Lord your God. Offer burnt offerings on this altar to the Lord your God.

1 Kings 6:7

The stones were completely finished before they were brought into the Temple area, so there was no noise of hammers, axes, or any other iron tools in the Temple.