'Behind' in the Bible

I set in the lower places behind the wall in exposed places, I even set the people, according to their families, with their swords, their spears and their bows.

And from that time forth the half of my servants wrought in the work, and the other half of them held the spears, and the shields, and the bows, and the corslets; and the captains were behind all the house of Judah.

But they were disobedient, and rebelled against thee, and cast thy law behind their backs, and slew thy prophets who testified against them to turn them to thee, and they wrought great provocations.