He shall come down - That is, The influence of his reign will be like fertilising showers. The word” he” in this place might have been “it,” referring to his reign, or to the influence of his government.
Like rain upon the mown grass - The word rendered “mown grass” - גז gêz - means properly “a shearing,” and is applied in Deuteronomy 18:4, and Job 31:20, to a fleece of wool. So it is understood here by the Septuagint, by the Latin Vulgate, by the Syriac, and by Luther; and, in accordance with this, it has been supposed by some that there is an allusion to the dew that descended on the fleece spread out by Gideon, Judges 6:37. The Chaldee Paraphrase renders it, “As the grass that has been eaten off by locusts;” where the idea would be that after locusts have passed over a field, devouring everything, when the rain descends the fields revive, and nature again puts on the appearance of life. This idea is adopted by Rosenmuller. The common interpretation, however, which refers the word to a “mowing,” that is, a “mown meadow,” is probably the correct one; and thus understood, the image is very beautiful. The reign of the Messiah would resemble the gently descending shower, under which the grass which has been mown springs up again with freshness and beauty.
As showers that water the earth - literally, “like showers, the watering of the earth.” The original word rendered “that water” suggests the idea of distilling, or “gently” flowing.