Exodus 26:34

Overview - Exodus 26
The ten curtains of the tabernacle.
The eleven curtains of goats' hair, and the covering of rams' and badgers' skins.
15 The boards of the tabernacle, with their sockets and bars.
31 The vail for the ark.
36 The hanging for the door.
Treasury of Scripture Knowledge

Exodus 26:34  (King James Version)
And thou shalt put the mercy seat upon the ark of the testimony in the most holy place.

put the mercy seat
25:21 40:20 Hebrews 9:5