Numbers 32:21-23

American Standard Version

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 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. ²³ But if ye will not do so, behold, ye have sinned against Jehovah; and be sure your sin will find you out.