Numbers 31:4 KJV
Of every tribe a thousand, throughout all the tribes of Israel, shall ye send to the war.
Numbers 31:4, King James Version
In context
3 And Moses spake unto the people, saying, Arm some of yourselves unto the war, and let them go against the Midianites, and avenge the Lord of Midian.
4 Of 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.