As he was finishing these words he heard the keys rattling at the door, and, being alarmed, immediately threw paper, ink, and pen into a hiding-place. However, he was able to complete the treatise and send it to Rastell. More’s brother-in-law read it; his heart was touched, his understanding enlightened, his prejudices cleared away; and from that hour this choice spirit was gained over to the Gospel of Christ. God had given him new eyes and new ears. A pure joy filled the prisoner’s heart. ‘Rastell now looks upon his natural reason as foolishness,’ he said. ‘Rastell, become a child, drinks the wisdom that cometh from on high.’[313] The conversion of Sir Thomas More’s brother-in-law made a great sensation, and the visits to Fryth’s cell became every day more numerous. Although separated from his wife and from Tyndale, whom he had been forced to leave in the Low Countries, he had never had so many friends, brothers, mothers, and fathers; he wept for very joy. He took his pen and paper from their hiding-place, and, always indefatigable, began to write first the _Looking-glass of Self-knowledge_, and next a _Letter to the faithful Followers of the Gospel of Christ_. ‘Imitators of the Lord,’ he said to them, ‘mark yourselves with the sign of the cross, not as the superstitious crowd does, in order to worship it, but as a testimony that you are ready to bear that cross as soon as God shall please to send it. Fear not when you have it, for you will also have a hundred fathers instead of one, a hundred mothers instead of one, a hundred mansions already in this life (for I have made the trial), and after this life, joy everlasting.’[314] [Sidenote: Fryth Visits Petit.]