יַרְתִּ֣יחַ כַּסִּ֣יר מְצוּלָ֑ה יָ֝֗ם יָשִׂ֥ים כַּמֶּרְקָחָֽה׃
ער צעקאָכט װי אַ טאָפּ די טיפֿעניש, ער מאַכט דעם ים װי זוד.
Rashi
He makes the deep seethe like a pot Like a small bubbling pot, that quickly raises bubbles one after another, so does he cause the deep, which is large and deep, to seethe.
Rashi
he makes the sea like a seething mixture Like a mixture of a concoction of spices, which is compounded and mixed, so does he make and mix the sea when he moves from his place.