Exodus 25:18-20

18And thou shalt make two cherubim of gold; [of] beaten work shalt thou make them, at the two ends of the mercy-seat.

19And make one cherub at the end of the one side, and one cherub at the end of the other side; out of the mercy-seat shall ye make the cherubim at the two ends thereof.

20And the cherubim shall stretch out [their] wings over it, covering over with their wings the mercy-seat, and their faces opposite to one another: toward the mercy-seat shall the faces of the cherubim be [turned].