Amaziah sent a message to the tribes of Judah and Benjamin and called together all the men who were twenty years old and older. Three hundred thousand men went to Jerusalem, all of them ready for battle and able to fight with spears and shields. Amaziah grouped these soldiers according to their clans and put them under the command of his army officers.
At that time I told the men of Reuben, Gad, and East Manasseh: The LORD our God told me to give you this land with its towns, and that's what I have done. Now your wives and children can stay here with your large flocks of sheep and goats and your large herds of cattle. But all of you men that can serve in our army must cross the Jordan River and help the other tribes, because they are your relatives.