Vermigli's move away from orthodox Catholic belief became apparent in 1539 when he preached on 1 Corinthians 3:9–17, a passage commonly used as proof of the doctrine of purgatory. Vermigli did not take this view in his preaching, though he did not openly deny the existence of purgatory. Gaetano da Thiene, an opponent of the "spirituali", reported his suspicions of Vermigli to the Spanish viceroy of Naples Don Pedro de Toledo, who prohibited Vermigli's preaching. The prohibition was removed on Vermigli's appeal to Rome, with which he received some help from powerful friends he had made in Padua, such as Cardinals Pole and Bembo. Despite this controversy, Vermigli continued to rise in the Lateran Congregation. He was made one of four visitors by the chapter-general in 1540. The visitors assisted the rector general by inspecting the Congregation's religious houses.