THE MERCY SEAT.
(17) A mercy seat. — Those critics to whom the idea of expiation is unsatisfactory, as Knobel and Gesenius, render kapporeth, the word here used, by “lid” or “cover.” Kaphar, it may be Admitted, has the physical meaning of “to cover” (Genesis 6:14); but kipper, the Piel form of the same verb, has never any other meaning than that of “covering,” or “expiating sins.” And kapporeth is not formed from kaphar, but from kipper. Hence the ἱλαστήριον of the LXX., the propitiatorium of the Vulg., and the “mercy seat” of the Authorised Version are correct translations. (Comp. 1 Chronicles 28:11, where the Holy of Holies is called beyth-hak-kapporeth, which is certainly not” the house of the cover,’ but “the house of expiation.”)
Of pure gold. — Not of shittim wood, overlaid with a plating of gold, but a solid mass of the pure metal. It has been calculated that the weight would be 750 lbs. Troy, and the value above £25,000 of our money. It was intended to show by this lavish outlay, that the “mercy seat” was that object in which the accessories of worship culminated, the crowning glory of the material tabernacle.