Numbers 14:42
"Go not up, for the LORD is not among you; that ye be not smitten before your enemies."
Cross References (ranked by relevance)
Deuteronomy 1:42
And the LORD said unto me, Say unto them, Go not up, neither fight; for I am not among you; lest ye be smitten before your enemies.
Joshua 7:12
Therefore the children of Israel could not stand before their enemies, but turned their backs before their enemies, because they were accursed: neither will I be with you any more, except ye destroy the accursed from among you.
Joshua 7:8
O LORD, what shall I say, when Israel turneth their backs before their enemies!