יֶהֱמ֣וּ יֶחְמְר֣וּ מֵימָ֑יו יִֽרְעֲשֽׁוּ־הָרִ֖ים בְּגַאֲוָת֣וֹ סֶֽלָה׃
Though the waters thereof roar and foam, Though the mountains shake at the swelling thereof. Selah
Read kabbalistic (mystical) interpretation of Psalms 46:4: and classical mystical sources.