Exodus 40:20

As Yahweh commanded Moses, so Aaron placed it before the Testimony to be kept.

“You shall put into the ark the testimony which I shall give you.

“You shall put the mercy seat on top of the ark, and in the ark you shall put the testimony which I will give to you.

“You shall put the mercy seat on the ark of the testimony in the Holy of Holies.

“Then I turned and came down from the mountain and put the tablets in the ark which I had made; and there they are, as Yahweh commanded me.”

There was nothing in the ark except the two tablets of stone which Moses laid there at Horeb, where Yahweh cut a covenant with the sons of Israel, when they came out of the land of Egypt.

Then David assembled all Israel at Jerusalem to bring up the ark of Yahweh to its place which he had prepared for it.