16 And to the tribes of Reuben and Gad I assigned the territory from Gilead to the River Arnon. The middle of the river was their southern boundary, and their northern boundary was the River Jabbok, part of which formed the Ammonite border.
17 On the west their territory extended to the River Jordan, from Lake Galilee in the north down to the Dead Sea in the south and to the foot of Mount Pisgah on the east.
18 “At the same time, I gave them the following instructions: ‘The Lord our God has given you this land east of the Jordan to occupy. Now arm your fighting men and send them across the Jordan ahead of the other tribes of Israel, to help them to occupy their land.
19 Only your wives, children, and livestock — I know you have a lot of livestock — will remain behind in the towns that I have assigned to you.
20 Help your fellow-Israelites until they occupy the land that the Lord is giving them west of the Jordan and until the Lord lets them live there in peace, as he has already done here for you. After that, you may return to this land which I have assigned to you.’
21 “Then I instructed Joshua: ‘You have seen all that the Lord your God did to those two kings, Sihon and Og; and he will do the same to everyone else whose land you invade.
22 Don't be afraid of them, for the Lord your God will fight for you.’