Exodus 39:35

the ark of the testimony and its staves, and the seat of reconciliation,

Exodus 25:17

And thou shalt make a seat of reconciliation of pure gold; two cubits and a half shall be its length and a cubit and a half its breadth.

Hebrews 9:5

and over it the cherubim of glory shadowing the seat of reconciliation, of which we cannot now speak particularly.

Hebrews 9:8

The Holy Spirit signifying in this, that the way into the sanctuary was not yet made manifest, as long as the first tabernacle was yet standing:

Treasury of Scripture Knowledge

Summary

The ark of the testimony, and the staves thereof, and the mercy seat,

The mercy seat

Bible References

The mercy seat

Exodus 25:17
And thou shalt make a seat of reconciliation of pure gold; two cubits and a half shall be its length and a cubit and a half its breadth.
Hebrews 9:5
and over it the cherubim of glory shadowing the seat of reconciliation, of which we cannot now speak particularly.