mercy seat
Exodus 25:17
And thou shalt make a mercy seat of pure gold: two cubits and a half shall be the length thereof, and a cubit and a half the breadth thereof.
Exodus 26:34
And thou shalt put the mercy seat upon the ark of the testimony in the most holy place.
Romans 10:4
For Christ is the end of the law for righteousness to every one that believeth.