Exodus 40:19-21
19 Then he spread the tent over the tabernacle and put the covering over the tent, as the Lord commanded him.
20 He took the Testimony and placed it in the ark, attached the poles to the ark and put the atonement cover over it.
21 Then he brought the ark into the tabernacle and hung the shielding curtain and shielded the ark of the Testimony, as the Lord commanded him.