16 Then they came near to him and said: "We will build sheepfolds here for our livestock, and cities for our little ones, 17 but we ourselves will be armed, ready to go before the children of Israel until we have brought them to their place; and our little ones will dwell in the fortified cities because of the inhabitants of the land. 18 We will not return to our homes until every one of the children of Israel has received his inheritance. 19 For we will not inherit with them on the other side of the Jordan and beyond, because our inheritance has fallen to us on this eastern side of the Jordan." 20 Then Moses said to them: "If you do this thing, if you arm yourselves before the Lord for the war, 21 and all your armed men cross over the Jordan before the Lord until He has driven out His enemies from before Him, 22 and the land is subdued before the Lord, then afterward you may return and be blameless before the Lord and before Israel; and this land shall be your possession before the Lord. 23 But if you do not do so, then take note, you have sinned against the Lord; and be sure your sin will find you out. 24 Build cities for your little ones and folds for your sheep, and do what has proceeded out of your mouth." 25 And the children of Gad and the children of Reuben spoke to Moses, saying: "Your servants will do as my lord commands. 26 Our little ones, our wives, our flocks, and all our livestock will be there in the cities of Gilead; 27 but your servants will cross over, every man armed for war, before the Lord to battle, just as my lord says."

Matthew Henry's Commentary on Numbers 32:16-27

Commentary on Numbers 32:16-27

(Read Numbers 32:16-27)

Here is the good effect of plain dealing. Moses, by showing their sin, and the danger of it, brought them to their duty, without murmuring or disputing. All men ought to consider the interests of others as well as their own; the law of love requires us to labour, venture, or suffer for each other as there may be occasion. They propose that their men of war should go ready armed before the children of Israel into the land of Canaan, and that they should not return till the conquest of Canaan was ended. Moses grants their request, but he warns them of the danger of breaking their word. If you fail, you sin against the Lord, and not against your brethren only; God will certainly reckon with you for it. Be sure your sin will find you out. Sin will surely find out the sinner sooner or later. It concerns us now to find our sins out, that we may repent of them, and forsake them, lest they find us out to our ruin.