You shall purchase food from them with money, that you may eat, and you shall also buy water from them with money, that you may drink.
Here is, I. A short account of the long stay of Israel in the wilderness: We compassed Mount Seir many days, Deu 2:1. Nearly thirty-eight years they wandered in the deserts of Seir; probably in some of their rests they staid several years, and never stirred; God by this not only chastised them for their murmuring and unbelief, but, 1.
Commenting on Deuteronomy 2:1-7
That is, if they would, as Aben Ezra observes; for though they had manna daily, yet if they would they might buy other food when they had an opportunity, as they would now have of Edom; but then they were not to take it by force or stealth, but pay for it, which they were able to do.
Deu 2:2-6 When they had gone through the Arabah to the southern extremity, the Lord commanded them to turn northwards, i.e., to go round the southern end of Mount Seir, and proceed northwards on the eastern side of it (see at Num 21:10), without going to war with the Edomites (התגּרה, to stir oneself up against a person to conflict, מלחמה), as He would not...
Commenting on Deuteronomy 2:2-6