Deuteronomy 32:2

“My doctrine shall drop as the rain, my speech shall distil as the dew, etc.] Which some, as Aben Ezra, take to be a prayer or wish, that the doctrine spoken by him might fall upon men like rain and dew on the earth, penetrate into their hearts, and influence them, and produce good effects there; but the words rather seem to be a prophecy of what would be: and by his “doctrine” and “speech”, which signify the same thing, is meant, not his law, which was fiery, this cooling, like rain and dew; that was like a storm, this as a gentle rain; that was terrible, this desirable; that was distressing, this refreshing, this no other than the Gospel, the speech of God, the doctrine of Christ, the…”

“My doctrine shall drop, &c.--The language may justly be taken as uttered in the form of a wish or prayer, and the comparison of wholesome instruction to the pure, gentle, and insinuating influence of rain or dew, is frequently made by the sacred writers (Isa 5:6; Isa 55:10-11).”

“Song of Moses If Deuteronomy 32:1-3 be regarded as the introduction, and Deuteronomy 32:43 as the conclusion, the main contents of the song may be grouped under three heads, namely, (1) Deuteronomy 32:4-18, the faithfulness of God, the faithlessness of Israel; (2) Deuteronomy 32:19-33, the chastisement and the need of its infliction by God; (3) Deuteronomy 32:34-42, God’s compassion upon the low and humbled state of His people. The Song differs signally in diction and idiom from the preceding chapters; just as a lyrical passage is conceived in modes of thought wholly unlike those which belong to narrative or exhortation, and is uttered in different phraseology. There are, however, in the…”

“As the rain - Look what effect rain and dew have upon herbs and grass which they make fresh and fragrant and growing, the same effect may my discourse have upon your hearts, that is, to make them soft and pliable and fruitful. Deuteronomy 32:3”

“32:2 like rain . . . like dew: This simile shows the refreshing gentleness of Moses’ teaching. It should produce the fruit of obedience in the hearts of God’s people.”

“drop: Sa2 23:4; Job 29:22, Job 29:23; Psa 72:6; Isa 55:10, Isa 55:11; Hos 6:4, Hos 14:5; Co1 3:6-8; Heb 6:7 as the showers: Mic 5:7; Zac 10:1 Deuteronomy 32:3”