Exodus 25:17

And he made the mercy seat of pure gold: two cubits and a half was the length thereof, and one cubit and a half the breadth thereof.

And over it the cherubims of glory shadowing the mercyseat; of which we cannot now speak particularly.

Let us therefore come boldly unto the throne of grace, that we may obtain mercy, and find grace to help in time of need.

Then David gave to Solomon his son the pattern of the porch, and of the houses thereof, and of the treasuries thereof, and of the upper chambers thereof, and of the inner parlours thereof, and of the place of the mercy seat,

And he took and put the testimony into the ark, and set the staves on the ark, and put the mercy seat above upon the ark:

Whom God hath set forth to be a propitiation through faith in his blood, to declare his righteousness for the remission of sins that are past, through the forbearance of God;

And thou shalt put the mercy seat upon the ark of the testimony in the most holy place.