Deuteronomy 20:3-4
Deuteronomy 20:3-4 ASV
and shall say unto them, Hear, O Israel, ye draw nigh this day unto battle against your enemies: let not your heart faint; fear not, nor tremble, neither be ye affrighted at them; for Jehovah your God is he that goeth with you, to fight for you against your enemies, to save you.