Cross reference
Exodus 26:34
34 `And thou hast put the mercy-seat on the ark of the testimony, in the holy of holies.
Exodus 25:21
21 `And thou hast put the mercy-seat on the ark above, and unto the ark thou dost put the testimony which I give unto thee;
Exodus 40:20
20 And he taketh and putteth the testimony unto the ark, and setteth the staves on the ark, and putteth the mercy-seat on the ark above;
Hebrews 9:5
5 and over it cherubim of the glory, overshadowing the mercy-seat, concerning which we are not now to speak particularly.