'Backs' in the Bible

Then He brought me into the inner court of the Lord’s house. And behold, at the entrance to the temple of the Lord, between the porch and the altar, were about twenty-five men with their backs to the temple of the Lord and their faces toward the east; and they were prostrating themselves eastward toward the sun.

Their whole body, their backs, their hands, their wings and the wheels were full of eyes all around, the wheels belonging to all four of them.