Luke 24:25 - Ellicott's Commentary On The Whole Bible

O fools, and slow of heart to believe. — The word for “fools” (more literally, silly, senseless) is not that which is used in Matthew 5:22; Matthew 23:17, but one belonging to a somewhat higher style of language. It is used by St. Paul of the “foolish Galatians” (Galatians 3:1), and elsewhere, and by no other New Testament writer. The word of reproof sounds strong, but we must remember that our Lord had already given hints as to the true interpretation of Messianic prophecies (Luke 9:22; Luke 9:44; Mark 14:21), which might have led thoughtful men to see that they pointed to suffering and death, as well as to sovereignty and triumph.