Deuteronomy 11:11 - Wesley's Explanatory Notes

Of hills and valleys — And therefore much more healthful than Egypt was, which as it was enriched, so it was annoyed with the Nile, which overflowed the land in summer time, and thereby made the country both unpleasant and unhealthful. And health being the greatest of all outward blessings, Canaan must therefore needs be a more desirable habitation than Egypt. The rain of heaven — Which is more easy, being given thee without thy charge or pains; more sweet and pleasant, not hindering thy going abroad upon thy occasions, as the overflow of the Nile did, whereby the Egyptians were confined in a great measure to their houses; more safe and healthful, being free from that mud which attends upon the waters of the Nile; and more certain too, the former and the latter rain being promised to be given to them in their several seasons, upon condition of their obedience, which condition, tho' it may seem a clog and inconvenience, yet indeed was a great benefit, that by their own necessities and interest they might be obliged to that obedience, upon which their happiness depended both for this life and the next.