Numbers 32:18-20

Young's Literal Translation

¹⁸ we do not turn back unto our houses till the sons of Israel have inherited each his inheritance,

¹⁹ for we do not inherit with them beyond the Jordan and yonder, for our inheritance hath come unto us beyond the Jordan at the [sun]-rising.'

²⁰ And Moses saith unto them, `If ye do this thing: if ye are armed before Jehovah for battle,