Deuteronomy 20
1 Ref When you go out to war against other nations, and come face to face with horses and war-carriages and armies greater in number than yourselves, have no fear of them: for the Lord your God is with you, who took you up out of the land of Egypt.
2 Ref And when you are on the point of attacking, let the priest come forward and say to the people,
3 Ref Give ear, O Israel: today you are going forward to the fight; let your heart be strong; do not let uncontrolled fear overcome you because of those who are against you;