Exodus 16:34

16:34 Just as the Lord commanded Moses, so Aaron placed it before the Testimony for safekeeping.

Exodus 25:16

25:16 You are to put into the ark the testimony that I will give to you.

Exodus 30:26

30:26 “With it you are to anoint the tent of meeting, the ark of the testimony,

Exodus 39:35

39:35 the ark of the testimony and its poles, and the atonement lid;