Charles Spurgeon Commentary Hebrews 11:29

"By faith they passed through the Red sea as by dry land: which the Egyptians assaying to do were swallowed up." — Hebrews 11:29 (ASV)

By faith they passed through the Red Sea as by dry land: which the Egyptians assaying to do were drowned.

There you have the difference between faith and presumption: faith goes through the sea, presumption is drowned in the sea.