Adam Clarke's Commentary on the Bible - Psalms 46:4
There is a river, the streams whereof - The Chaldee understands the river, and its streams or divisions, as pointing out various peoples who should be converted to the faith and thus make glad the city of God, Jerusalem by their flowing together to the worship of the true God. But the river may refer to the vast Medo-Persian army and its divisions: those branches which took Babylon; and, instead of ruining and destroying the poor Jews, preserved them alive, and gave them their liberty; and... read more
Adam Clarke's Commentary on the Bible - Psalms 46:3
Though the waters thereof roar - Waters, in prophetic language, signify people; and, generally, people in a state of political commotion, here signified by the term roar. And by these strong agitations of the people, the mountains - the secular rulers, shake with the swelling thereof - tremble, for fear that these popular tumults should terminate in the subversion of the state. This very people had seen all Asia in a state of war. The Persians had overturned Asia Minor, and destroyed the... read more