The New John Gill Exposition of the Entire BibleJohn 6:18
And the sea arose…
Swelled, and was tumultuous and
raging; the waves mounted up, and tossed the ship to and fro:
by reason of a great wind that blew;
which agitated the waters of
the sea, and lifted up the waves; which storm seems to have arose
after they had set sail, and were got into the midst of the sea.