The voice of the Lord - Thunder, so called, Exodus 9:23, Exodus 9:28, Exodus 9:29; Job 37:4; Psalm 18:13; Isaiah 30:30. On this subject see the note on Job 37:4, where there is a particular description of the nature and generation of thunder; and of the lightning, clap, rain, and other phenomena which accompany it.
Upon many waters - The clouds, which Moses calls the waters which are above the firmament.
The voice of the Lord - The voice of Yahweh. There can be no doubt that the expression here, which is seven times repeated in the psalm, “the voice of Jehovah,” refers to thunder; and no one can fail to see the appropriateness of the expression. In heavy thunder it seems as if God spake. It comes from above. It fills us with awe. We know, indeed, that thunder as well as the other phenomena in the world, is produced by what are called “natural causes;” that there is no miracle in thunder; and that really God does not “speak” anymore in the thunder than he does in the sighing of the breeze or in the gurgling of the rivulet; but:
(a) He seems more impressively to speak to people in the thunder; and
(b) He may not improperly be regarded as speaking alike in the thunder, in the sighing of the breeze, and in the gurgling stream.
In each and all of these ways God is addressing men; in each and all there are lessons of great value conveyed, as if by His own voice, respecting His own existence and character. Those which are addressed to us particularly in thunder, pertain to His power, His majesty, His greatness; to our own weakness, feebleness, dependence; to the ease with which He could take us away, and to the importance of being prepared to stand before such a God. “Is upon the waters.” The word “is” is supplied here by our translators in italics. The whole passage might be read as an exclamation: “The voice of Jehovah upon the waters!” It is the utterance of one who is overpowered by a sudden clap of thunder. The mind is awed. God seems to speak; His voice is heard rolling over the waters. The psalm was most likely composed in view of the sea or a lake - not improbably in view of the Mediterranean, when a storm was passing over it. A thunderstorm is sublime anywhere, in mountain scenery or upon the plains, upon the land or upon the ocean; but there are circumstances which give it special grandeur at sea, when the thunder seems to “roll” along with nothing to check or break it, and when the sublimity is increased by the solitude which reigns everywhere on the ocean.
The God of glory - The glorious God. See the notes at Psalm 24:7-10.
The Lord is upon many waters - Yahweh Himself seems to be on the ocean. His voice is heard there, and He Himself appears to be there. The margin here is, “great waters.” This would seem to imply that the psalm was composed in view of waters more extended than a lake or a river, and sustains the idea above expressed, that it was in view of the great waters which must have been so familiar to the mind of the sacred writer - the waters of the Mediterranean.