Psalms 29:10 - Ellicott's Commentary On The Whole Bible

The Lord sitteth. — Better, Jehovah was throned upon the flood, and Jehovah will be throned a king for ever. The word translated “flood” is exclusively, except in this place, applied to the Deluge (Genesis 6:7). Hence we must suppose that the poet was recalled to the thought of the great Flood by the torrents of rain now falling. Jehovah sat then upon the waters as their King, and so He will for ever be throned on high above the storms of earth. Or, perhaps, the Deluge may have passed into a proverbial term for any great rain.