Numbers 31:6 in the King James Version
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.
Context
5 So there were delivered, out of the thousands of Israel, a thousand from every tribe, twelve thousand armed for war.
6 Moses sent them, one thousand of every tribe, to the war with Phinehas the son of Eleazar the priest, to the war, with the vessels of the sanctuary and the trumpets for the alarm in his hand.
7 They fought against Midian, as the LORD commanded Moses. They killed every male.