He maketh the deep to boil like a pot. The rush of the crocodile through the water of the stream or pool in which he dwells causes a stir and a commotion which is forcibly compared to the boiling of water in a caldron.
He maketh the sea like a pot of ointment. It is generally allowed that by "the sea" here is meant the Nile, as in Isaiah 18:2; Isaiah 19:5; and Nahum 3:8.