Numbers 32:21 in the World English Bible
and every one of your armed men will pass over the Jordan before the LORD until he has driven out his enemies from before him,
Context
20 And Moses said unto them, If ye will do this thing, if ye will go armed before the LORD to war,
21 And will go all of you armed over Jordan before the LORD, until he hath driven out his enemies from before him,
22 And the land be subdued before the LORD: then afterward ye shall return, and be guiltless before the LORD, and before Israel; and this land shall be your possession before the LORD.