Numbers 32:16-19

16And they came near unto him, and said, We will build sheepfolds here for our cattle, and cities for our little ones: 17But we ourselves will go ready armed before the children of Israel, until we have brought them unto their place: and our little ones shall dwell in the fenced cities because of the inhabitants of the land. 18We will not return unto our houses, until the children of Israel have inherited every man his inheritance. 19For we will not inherit with them on yonder side Jordan, or forward; because our inheritance is fallen to us on this side Jordan eastward.