These were the Israelite family heads. The sons of Reuben, the firstborn son of Israel, were Hanok and Pallu, Hezron and Karmi. These were the families of Reuben.
Moses did not allocate any land for the Levites to own. Instead they were allotted the offerings made by fire to the Lord, the God of Israel, as the Lord had promised them.
Now that the Lord your God has given peace to your brothers, as he promised, go back home to your land that Moses, the servant of the Lord, gave you on the other side of the Jordan.