Parallel
Numbers 32:17
Jewish Publication Society 1917 · Berean Standard Bible
but we ourselves will be ready armed to go before the children of Israel, until we have brought them unto their place; and our little ones shall dwell in the fortified cities because of the inhabitants of the land.
But we will arm ourselves and be ready (note: LXX we will arm ourselves for battle) to go ahead of the Israelites until we have brought them into their place. Meanwhile, our little ones will remain in the fortified cities for protection from the inhabitants of the land.