'Back' in the Bible

Then went I up in the night by the brook, and viewed the wall; and I turned back, and entered by the valley gate, and so returned.

"Hear, our God; for we are despised; and turn back their reproach on their own head, give them up for a spoil in a land of captivity;

"Nevertheless they were disobedient, and rebelled against you, and cast your law behind their back, and killed your prophets that testified against them to turn them again to you, and they committed awful blasphemies.