3:10 The mountains saw thee, [and] they trembled: the overflowing of the water {n} passed by: the deep uttered his voice, [and] lifted up his hands on high.
(n) He alludes to the Red Sea and Jordan, which gave passage to God's people, and showed signs of their obedience as it were by the lifting up of their hands.
3:10 Overflowing - The inundation which at that season was wont to be very great in and round Jordan, passed away at the word of God; the waters below flowed, and ran from those above, which stood on a heap to make a path for Israel. The deep - Either the deep channel in which Jordan flowed, or the Red Sea with dreadful roaring parted its waters. Lift up his hands - Its waves which stood on an heap.
3:3-15 God's people, when in distress, and ready to despair, seek help by considering the days of old, and the years of ancient times, and by pleading them with God in prayer. The resemblance between the Babylonish and Egyptian captivities, naturally presents itself to the mind, as well as the possibility of a like deliverance through the power of Jehovah. God appeared in his glory. All the powers of nature are shaken, and the course of nature changed, but all is for the salvation of God's own people. Even what seems least likely, shall be made to work for their salvation. Hereby is given a type and figure of the redemption of the world by Jesus Christ. It is for salvation with thine anointed. Joshua who led the armies of Israel, was a figure of Him whose name he bare, even Jesus, our Joshua. In all the salvations wrought for them, God looked upon Christ the Anointed, and brought deliverances to pass by him. All the wonders done for Israel of old, were nothing to that which was done when the Son of God suffered on the cross for the sins of his people. How glorious his resurrection and ascension! And how much more glorious will be his second coming, to put an end to all that opposes him, and all that causes suffering to his people!