Exod 14:22

“How hard a temptation it is to pass through the midst of the sea, to see the waves rise piled up, to hear the noise and rumbling of the raging waters! But if you follow Moses, that is, the law of God, the waters will become for you walls on the right and left, and you will find a path on dry ground in the midst of the sea. Moreover, it can happen that the heavenly journey that we say the soul takes may hold peril of waters. Great waves may be found there.”

“Again, according to the view of the inspired Paul, the people itself, by passing through the Red Sea, proclaimed the good tidings of salvation by water. The people passed over, and the Egyptian king with his host was engulfed, and by these actions this sacrament was foretold. For even now, whensoever the people is in the water of regeneration, fleeing from Egypt, from the burden of sin, it is set free and saved. But the devil with his own servants (I mean, of course, the spirits of evil) is choked with grief and perishes, deeming the salvation of men to be his own misfortune.”