Upon this declaration Moses absolves them from all guilt, and promises them the desired land for a possession, on condition that they fulfil their promise; but he reminds them again of the sin that they will commit, and will have to atone for, if their promise is not fulfilled, and closes with the admonition to build towns for their families and pens for their flocks, and to do what they have promised. Upon this they promise again (Numbers 32:25-27), through their spokesman (as the singular ויּאמר in Numbers 32:25, and the suffix in אדני in Numbers 32:27, clearly show), that they will fulfil his command. The use of the expression "before Jehovah," in the words, "go armed before Jehovah to war," in Numbers 32:20 and Numbers 32:21, may be explained from the fact, that in the war which they waged at the command of their God, the Israelites were the army of Jehovah, with Jehovah in the midst. Hence the ark of the covenant was taken into the war, as the vehicle and substratum of the presence of Jehovah; whereas it remained behind in the camp, when the people wanted to press forward into Canaan of their own accord (Numbers 14:44). But if this is the meaning of the expression "before Jehovah," we may easily understand why the Reubenites and Gadites do not make use of it in Numbers 32:17, namely, because they only promise to go equipped "before the children of Israel," i.e., to help their brethren to conquer Canaan. In Numbers 32:32 they also adopt the expression, after hearing it from the mouth of Moses (Numbers 32:20).

(Note: This completely sets aside the supposed discrepancy which Knobel adduces in support of his fragmentary hypothesis, viz., that the Elohist writes "before Israel" in Numbers 32:17 and Numbers 32:29, when the Jehovist would write "before Jehovah," - a statement which is not even correct; since we find "before Jehovah" in Numbers 32:29, which Knobel is obliged to erase from the text in order to establish his assertion.)

נקיּים, innocent, "free from guilt before Jehovah and before Israel." By drawing back from participation in the war against the Canaanites, they would not only sin against Jehovah, who had promised Canaan to all Israel, and commanded them to take it, but also against Israel itself, i.e., against the rest of the tribes, as is more fully stated in Numbers 32:7-15. In Numbers 32:22, "before Jehovah" signifies according to the judgment of Jehovah, with divine approval. חטּאתכם וּדעוּ, "ye will know your sin," which will overtake (מצא) or smite you, i.e., ye will have to make atonement for them.

Numbers 32:26 Parallel Commentaries

Joshua 1:14 "Your wives, your little ones, and your cattle shall remain in the land which Moses gave you beyond the Jordan, but you shall cross before your brothers in battle array, all your valiant warriors, and shall help them,