'Rear guard' in the Bible

And the standard of the camp of the children of Dan set forward, the rear-guard of all the camps according to their hosts, and over his host was Ahiezer the son of Ammishaddai;

And the armed men went before the priests who blew with the trumpets, and the rearguard came after the ark; they blew with the trumpets in marching.

And the seven priests carrying the seven blast-trumpets before the ark of Jehovah went on and blew continually with the trumpets; and the armed men went before them, and the rearguard went after the ark of Jehovah; they blew with the trumpets in marching.

For ye shall not go out with haste, nor go by flight; for Jehovah will go before you, and the God of Israel will be your rear-guard.

Then shall thy light break forth as the dawn, and thy health shall spring forth speedily; and thy righteousness shall go before thee, the glory of Jehovah shall be thy rearguard.