He also wrote a remarkable work on the last book of the New Testament, the Revelation or the Apocalypse, which today is still held in high regard by Roman Catholics. He interpreted the book of the Apocalypse as follows: The seven stars and the seven candlesticks seen by St John signify seven periods of the history of the Church, from its foundation to its consummation at the final judgment. To these periods correspond the seven churches of Asia Minor, the seven days of the Mosaic record of creation, the seven ages before Christ, and the seven gifts of the Holy Ghost. Since, he claimed, all life is developed in seven stages, so God has fixed seven periods for regeneration.