1 Kings 8:7

For the cherubims spread forth [their] two wings over the place of the ark, and the cherubims covered the ark and the staves thereof above.

Ver. 7. And the cherubims covered the ark] Which had the law within it, and the mercy seat upon it: to set forth Christ's covering the curses of the law, in whom is the ground of all mercy: which things the angels desire to pry into, as into the pattern of God's deep wisdom.