The mountains saw thee, [and] they trembled: the overflowing of the water passed by: the deep uttered his voice, [and] lifted up his hands on high.
Ver. 10. The mountains saw thee, and they trembled] sc. At the promulgation of the law, Exo 19:17 Psalms 114:4; Psalms 114:6, when God came with ten thousand of his saints, Deuteronomy 33:2; and so terrible was the earthquake, that it wrought an earthquake, even in Moses himself, Hebrews 12:21. It is the office of the law to do so; and happy is he who, terrified and thunder struck by the threats thereof, runs to Christ for refuge, as to One who is able to save to the utmost them that come unto God by him, Hebrews 9:25. Some take mountains metaphorically, for the mighties of the earth, and read it thus, The mountains saw thee, and they grieved, see Num 22:3 Joshua 2:9,11 .
The overflowing of the water passed by] The inundation of Jordan passed into the Dead Sea, the lower part of it, I mean, like as the upper stood, and rose up upon a heap, Joshua 3:13, being bounded and barred up by the almighty power of God.
The deep uttered his voice, and lifted up his hands on high] i.e. Summo consensu suffragatus est. It voiced, and voted for God's judgments; helping forward the execution thereof.