The workers used large stones to build the walls. The workers cut the stones at the place where they got them out of the ground. So there was no noise of hammers, axes, or any other iron tools in the temple.
If you use stones to make an altar, then don’t use stones that were cut with an iron tool. [132] If you do that, it will make the altar not acceptable.
So Moses wrote all of the commands of the Lord {on a scroll}. The next morning, Moses got up and built an altar [155] near the bottom of the mountain. And he set up twelve stones—one for each of the twelve family groups of Israel.