Exodus 25:16-22

And you shall put inside the ark the Testimony [the Ten Commandments] which I will give you. And you shall make a mercy seat (a covering) of pure gold, two cubits and a half long and a cubit and a half wide. And you shall make two cherubim (winged angelic figures) of [solid] hammered gold on the two ends of the mercy seat. Make one cherub on each end, making the cherubim of one piece with the mercy seat, on the two ends of it. And the cherubim shall spread out their wings above, covering the mercy seat with their wings, facing each other and looking down toward the mercy seat. You shall put the mercy seat on the top of the ark, and in the ark you shall put the Testimony [the Ten Commandments] that I will give you. There I will meet with you and, from above the mercy seat, from between the two cherubim that are upon the ark of the Testimony, I will speak intimately with you of all which I will give you in commandment to the Israelites.