Jamieson-Fausset-Brown on Numbers 32:20
Moses said unto them, If ye will do this thing--with sincerity and zeal.
go before the Lord to war--The phrase was used in allusion to the order of march in which the tribes of Reuben and Gad immediately preceded the ark (see on Num. 2:10-31), or to the passage over the Jordan, in which the ark stood in mid-channel, while all the tribes marched by in succession (Jos 3:4), of course including those of Reuben and Gad, so that, literally, they passed over before the Lord and before the rest of Israel (Jos 4:13). Perhaps, however, the phrase is used merely in a general sense to denote their marching on an expedition, the purpose of which was blessed with the presence, and destined to promote t…
Read the whole note in the consoleJohn Gill on Numbers 32:21
And will go all of you armed over Jordan before the Lord,.... Moses tries them thoroughly, and is very express in his words, requiring them not only to go armed, or march from the place where they were, towards the land of Canaan, but to go over Jordan, and not some of them only, but all, and that before the Lord; though indeed, when the tribes came to the river Jordan, the ark, which was the symbol of the divine Presence, went before all the tribes into it, and there stayed till they passed over, and then these two tribes and the half tribe of Manasseh passed before the children of Israel, and before the Lord, unto battle, Joshua 3:11.
until he hath driven out his enemies before him: the C…
Read the whole note in the consoleJohn Calvin on Numbers 32:20-22
And Moses said unto them. Moses might seem to err on the side of excessive good-nature, in that he extends the boundaries prescribed by God, in complying with their wish. For, since their inheritance had been promised them in the land of Canaan, they ought to have been contented with that as their abode; nor was it allowable for Moses to make any alteration in the Divine decree. There is also another thing no less inconsistent, that in a point of so much perplexity, Moses does not, as usual, consult God, but gives an immediate answer, which indirectly overthrows the previous ordinance of God. And, in truth, their desire was by no means excusable, since it would have never entered their minds…