Numbers 31:4-6

21st Century King James Version

⁴ From every tribe a thousand, throughout all the tribes of Israel, shall ye send to the war.”

⁵ So there were delivered out of the thousands of Israel, a thousand of every tribe, twelve thousand armed for war.

⁶ And Moses sent them to the war, a thousand of every tribe — them and Phinehas the son of Eleazar the priest to the war, with the holy instruments and the trumpets to blow in his hand.