Numbers 32
20 Ref And Moses said unto them, If ye will do this thing, if ye will arm yourselves to go before Jehovah to the war,
21 and every armed man of you will pass over the Jordan before Jehovah, until he hath driven out his enemies from before him,
22 Ref and the land is subdued before Jehovah; then afterward ye shall return, and be guiltless towards Jehovah, and towards Israel; and this land shall be unto you for a possession before Jehovah.