Isaiah 52:12
"For ye shall not go out with haste, nor go by flight: for the LORD will go before you; and the God of Israel will be your rereward."
Cross References (ranked by relevance)
For the LORD your God is he that goeth with you, to fight for you against your enemies, to save you.
Then shall thy light break forth as the morning, and thine health shall spring forth speedily: and thy righteousness shall go before thee; the glory of the LORD shall be thy rereward.
I will go before thee, and make the crooked places straight: I will break in pieces the gates of brass, and cut in sunder the bars of iron:
And thus shall ye eat it; with your loins girded, your shoes on your feet, and your staff in your hand; and ye shall eat it in haste: it is the LORD’s passover.
The breaker is come up before them: they have broken up, and have passed through the gate, and are gone out by it: and their king shall pass before them, and the LORD on the head of them.
And it shall be, when thou shalt hear a sound of going in the tops of the mulberry trees, that then thou shalt go out to battle: for God is gone forth before thee to smite the host of the Philistines.
And the standard of the camp of the children of Dan set forward, which was the rereward of all the camps throughout their hosts: and over his host was Ahiezer the son of Ammishaddai.
And Deborah said unto Barak, Up; for this is the day in which the LORD hath delivered Sisera into thine hand: is not the LORD gone out before thee? So Barak went down from mount Tabor, and ten thousand men after him.