In the year of our Lord five hundred and thirty-seven, there was a man named Theophilus, which was vicar of a bishop. And when the bishop was dead, all the people chose Theophilus to be bishop, but he said the office of vicar sufficed him, and had liefer that than to be made bishop, so there was there another bishop made, and Theophilus was against his will put out of his office.

Then he fell in despair, in such wise that he counselled with a Jew how he should have his office again, which Jew was a magician, and called the devil, and he came anon. Then Theophilus, by commandment of the devil, renied God and his Mother, and renounced his christian profession, and wrote an obligation with his blood and sealed it with his ring, and delivered it to the devil, and thus he was brought into his office again.

And on the morn Theophilus was received into the grace of the bishop by the procuration of the devil, and was re-established in the dignity of his office. And then on a time our blessed Lady appeared to him in vision, and rebuked him of his felony, and commanded him to forsake the devil, and made him to confess Jesu Christ to be son of God, and to knowledge himself to be in purpose to be a christian man, and thus he recovered the grace of her and of her son.

And in sign of pardon that she had gotten him, she delivered to him again his obligation that he had given to the devil, and laid it upon his breast so that he should never doubt to be servant of the devil, but he enjoyed that he was so delivered by our blessed Lady.

And when Theophilus had heard all this he was much joyful, and told it to the bishop and tofore all the people that was befallen him, and all marvelled greatly, and gave laud and praising unto the glorious Virgin, our Lady, S. Mary.

Source: Jacobus de Voragine, The Golden Legend / Legenda Aurea, “The Nativity of Our Lady,” Theophilus miracle. English translation by William Caxton, 1483, edited by F. S. Ellis in The Golden Legend or Lives of the Saints, Temple Classics, London: J. M. Dent, 1900.