Psalms 46:3

“[Though] the waters thereof roar [and] be troubled, etc.] The noise of which causes men’s hearts to fail them for fear, (<422125>Luke 21:25,26); [though] the mountains shake with the swelling thereof. All these figurative expressions denote the hurlyburlies, confusions, and disorders that have been or will be in the world; amidst all which the people of God have no reason to fear; for it is always well with the righteous, let it go how it will with others. The passage may be applied to the destruction of Jerusalem, and the wars preceding it, and the dispersion of the Jews upon it; when true believers in Christ found him to be their refuge, strength, and help in that time of trouble, such as…”

“swelling--well represents the pride and haughtiness of insolent foes.”

“Though the waters thereof roar and be troubled - The waters of the sea. The idea is, that they would not be afraid though everything should be in commotion, and be as unsettled as the restless waves of the ocean. The earth might be changed, the mountains removed, the agitated sea roar and dash against the shore, but their minds would be calm. The word rendered “be troubled” means to boil; to ferment; to foam; and here it refers to the ocean as agitated and lashed into foam. Nothing is more sublime and fearful than the ocean in a storm; nothing furnishes a better illustration of the peace produced by confidence in God amid the agitations which occur in the world, than the mind of a seaman…”

“the waters: Psa 18:4, Psa 93:3, Psa 93:4; Job 38:11; Isa 5:3, Isa 17:12, Isa 17:13; Jer 5:22; Mat 7:25; Rev 17:15 mountains: Psa 114:4-7; Jdg 5:4, Jdg 5:5; Kg1 19:11; Job 9:5, Job 9:6; Jer 4:24; Mic 1:4; Nah 1:5; Rev 16:20 Psalms 46:4”