Deuteronomy 20:7-9

King James Version

⁷ And what man is there that hath betrothed a wife, and hath not taken her? let him go and return unto his house, lest he die in the battle, and another man take her.

⁸ And the officers shall speak further unto the people, and they shall say, What man is there that is fearful and fainthearted? let him go and return unto his house, lest his brethren's heart faint as well as his heart.

⁹ And it shall be, when the officers have made an end of speaking unto the people that they shall make captains of the armies to lead the people.