Exodus 25:16

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

Exodus 25:21

25:21 You are to put the atonement lid on top of the ark, and in the ark you are to put the testimony I am giving you.

Exodus 40:3

40:3 You are to place the ark of the testimony in it and shield the ark with the special curtain.

Exodus 40:20

40:20 He took the testimony and put it in the ark, attached the poles to the ark, and then put the atonement lid on the ark.