"The discernment of spirits, such as the First Letter to the Thessalonians demands in response to the dubious prophets and prophecies of the time (5:9ff.), remains our permanent task. Both the acceptance of justified criticism and the protection of the faithful from falsifications of the Gospel, from an adulteration of the faith by the spirit of the world which passes itself off as the Holy Spirit, are integral parts of this discernment. We can learn it only in a deep interior union with Christ, in an obedience to the Word of God which finds ever-new expression in our lives and in an inner rooting in the living Church of all places and all times. But we are all in constant need of forgiveness and correction."(Joseph Ratzinger, 1993)