Though the sea be very tempestuous, and its waters (by which a multitude of people is oft signified, as Revelation 17:1,15) rage, to Wit, against us, as appears from the following verses. Though its raging waves assault mighty princes and kingdoms, and make them shake and be ready to fall down.
Related Commentaries of Psalms 46:3
Psalms 46:3
3 Though the waters thereof roar and be troubled, though the mountains shake with the swelling thereof. Selah.