“They will not hunger or thirst, nor will the heat or sun strike them.” The Millennial Kingdom, when Christ rules the earth, will be a wonderful place. There will be no starvation or even hunger and the water will be abundant and safe to drink. The word “heat” may refer to the dry heat of the sun, or some scholars think it refers to the scorching dry desert wind. In any case, the picture Isaiah is painting of the Millennial Kingdom is that it will be an amazingly wonderful place. Unlike the conditions that Isaiah’s audience was used to, which was very hot summer days and a hot dry wind that annually came off the eastern desert, Israel would have a wonderfully mild climate.
[For more on the wonderful Millennial Kingdom, see Appendix 3, “Christ’s Future Kingdom on Earth”].