'Behind' in the Bible

So we captured all of his cities at that time, and we destroyed each town [of] males and the women and the children; we did not leave behind a survivor.

are they not beyond the Jordan, behind the way of the going in of the sun, in the land of the Canaanite, who is dwelling in the plain over-against Gilgal, near the oaks of Moreh?

'When thou beatest thine olive, thou dost not examine the branch behind thee; to the sojourner, to the fatherless, and to the widow, it is.

'When thou cuttest thy vineyard, thou dost not glean behind thee; to the sojourner, to the fatherless, and to the widow, it is;

How he met thee by the way, and smote the hindmost of thee, even all that were feeble behind thee, when thou wast faint and weary; and he feared not God.