Numbers 32:28

24 Build cities for your little ones and folds for your flocks, but do what you have promised.”

25 The Gadites and Reubenites said to Moses, “Your servants will do just as our lord commands.

26 Our children, our wives, our livestock, and all our animals will remain here in the cities of Gilead.

27 But your servants are equipped for war, and every man will cross over to the battle before the LORD, just as our lord says.”

28 So Moses gave orders about them to Eleazar the priest, to Joshua son of Nun, and to the family leaders of the tribes of Israel.

29 And Moses said to them, “If the Gadites and Reubenites cross the Jordan with you, with every man armed for battle before the LORD, and the land is subdued before you, then you are to give them the land of Gilead as a possession.

30 But if they do not arm themselves and go across with you, then they must accept their possession among you in the land of Canaan.”

31 The Gadites and Reubenites replied, “As the LORD has spoken to your servants, so we will do.

32 We will cross over into the land of Canaan armed before the LORD, that we may have our inheritance on this side of the Jordan.”

Read all of Numbers 32