Albert Barnes Commentary 2 Kings 3:17

"For thus saith Jehovah, Ye shall not see wind, neither shall ye see rain; yet that valley shall be filled with water, and ye shall drink, both ye and your cattle and your beasts." — 2 Kings 3:17 (ASV)

No rain was to fall where the Israelites and their enemies were encamped; there was not even to be that nearly universal accompaniment of rain in the East—a sudden rise of wind (Compare to 1 Kings 18:45; Psalms 147:18; Matthew 7:25).

Cattle and your beast—The former are the animals brought for food; the latter are the baggage animals.