Exodus 25:20

Exo 25:20 And the cherubims shall stretch forth [their] wings on high, covering the mercy seat with their wings, and their faces [shall look] one to another; toward the mercy seat shall the faces of the cherubims be.

Ver. 20. Toward the mercy seat shall the faces, &c. ] Angels in the Syriac are called אפנים , of the face; because they look ever on the face of God, waiting his commands.