If thou shalt do this thing, and God command thee so. — A reference of the entire matter to God, before any final decision was made, is plainly indicated. Moses must have already had some mode of consulting God on any point which required to be settled, and obtaining an answer. Was it by the “Urim and Thummim”?
Thou shalt be able to endure. — Comp. Exodus 18:18, where the inability of Moses to endure, unless he made some change, was strongly asserted.
And all this people shall also go to their place in peace. — The people, i.e., will go on their way to Canaan peacefully and contentedly, without suffering the inconvenience to which they are now subject.