Matthew 8:24 - Ellicott's Commentary On The Whole Bible

There arose a great tempest. — Storms such as that here described are of common occurrence in all inland seas. The wind sweeps through the narrow mountain valleys, and the sea, which a few minutes before was smooth as glass, is at once rough with the white crests of the foaming waves. The ship was on the point of sinking, as the waves dashed over it while it was in the trough between them. It was beginning to be filled with water, and still He slept.