Complex sentence: His idea that saints and purified souls would see God immediately after death was at odds with the position of Pope John XXII, who contended that God's essence would be revealed only after the Last Judgment.
Split into simpler sentences: His idea that saints and purified souls would see God immediately after death was at odds with the position of Pope John XXII. The Holy Father contended that God's essence would be revealed only after the Last Judgment.