It must have been a most blessed discovery, that of an old Latin Bible which he found in the Erfurt Library about this time. He had never seen the Book before. It taught him another lesson than that of fasts and vigils Luther learned now that a man was saved not by singing masses, but by the infinite grace of God: a more credible hypothesis. He gradually got himself founded, as on the rock. No wonder he should venerate the Bible, which had brought this blessed help to him. He prized it as the Word of the Highest must be prized by such a man. He determined to hold by that, as through life and to death he firmly did.