Luke 18:42 - Ellicott's Commentary On The Whole Bible

Thy faith hath saved thee. — Better, as in St. Mark, Thy faith hath made thee whole, the immediate reference being obviously to the restoration of the man’s sight, and that which was in the immediate future being recognised as already ideally completed. Beyond this, as in the use of the same formula in Luke 7:50, there lies in the word a reference to the salvation, the healthiness of spiritual vision, of which the restoration of bodily sight was at once the type and the earnest.