Bow thy heavens, O Lord, and come down,.... The heavens, which the Lord has made, and where he dwells; and which are under his influence, and he can cause to incline or bow at his pleasure: and which literally may be said to bow, particularly the airy heavens, when these are filled with clouds heavy with rain, and hang low, ready to fall upon the earth, and being rent, let down showers on it: and mystically may design storms of wrath gathering over the heads of ungodly men, and revealed from heaven against them.
Or rather, as connected with the phrase, "and come down", denotes some appearance or manifestation of God; either for the help and assistance of his people; or in a way of vengeance against their enemies; or both: and which descent must be understood in consistence with the omnipresence of God; and supposes his habitation to be on high, and is expressive of regard to the persons and affairs of men on earth; and is by some considered as a prayer for the incarnation of Christ, which is sometimes signified by coming down from heaven; not by change of place, nor by bringing an human nature, soul or body, down with him from heaven; but by the assumption of our nature; and which was greatly wished, prayed, and longed for, by the Old Testament saints The Targum is,"O Lord, bow the heavens, and manifest thyself;''see Ps 18:9;touch the mountains, and they shall smoke; as Mount Sinai did when the Lord descended on it, Ex 19:18; see Ps 104:32; These, according to Kimchi, signify mighty kings, strong as mountains: so kingdoms are sometimes called; as the Babylonian empire is called a mountain, a destroying and burnt mountain, Zec 4:7.