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What Is the Great Apostasy?

It is the falling away from faith that Scripture says will come before Christ returns: “unless the apostasy comes first and the lawless one is revealed” (2 Thessalonians 2:3). The Church teaches that a final trial “will shake the faith of many believers” (CCC 675). Many may fall away, but the Church herself will never fail.

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The short answer“Apostasy” means a falling away, a turning from the faith once received. Scripture warns that before the Lord's return many will fall away, and the Catechism teaches that the Church must pass through a final trial that will shake the faith of many (CCC 675). Falling away has happened in every age, and a final apostasy is still to come. What will never happen is the failure of the Church herself: “She is indestructible” (CCC 869).

What Scripture says

Paul. To a church shaken by rumors that the day of the Lord had come, Paul says two things come first: “Let no one deceive you in any way. For unless the apostasy comes first and the lawless one is revealed, the one doomed to perdition…” (2 Thessalonians 2:3). The English word comes straight from the Greek apostasia, a defection or rebellion. See 2 Thessalonians 2:3–5.

Jesus. In his discourse on the end, the Lord foretells the same cooling of faith: “And then many will be led into sin; they will betray and hate one another. Many false prophets will arise and deceive many; and because of the increase of evildoing, the love of many will grow cold” (Matthew 24:10–12). He asks a searching question at the end of a parable about praying without growing weary: “But when the Son of Man comes, will he find faith on earth?” (Luke 18:8). It is a question put to each of us, not a forecast. See Matthew 24:4–14.

The pastoral letters. “But understand this: there will be terrifying times in the last days.” People will be “lovers of pleasure rather than lovers of God,” who “make a pretense of religion but deny its power” (2 Timothy 3:1–5). “For the time will come when people will not tolerate sound doctrine but, following their own desires and insatiable curiosity, will accumulate teachers and will stop listening to the truth and will be diverted to myths” (2 Timothy 4:3–4). See 2 Timothy 3:1–5, 2 Timothy 4:1–4 and 1 Timothy 4:1–3.

These warnings work in two ways at once. The “last days” began with Christ, so falling away is already at work, and Timothy must deal with it now. And a last, greatest apostasy is still to come, tied to the revealing of the lawless one.

What the Church teaches

The Catechism teaches: “Before Christ's second coming the Church must pass through a final trial that will shake the faith of many believers.” It describes that trial as “a religious deception offering men an apparent solution to their problems at the price of apostasy from the truth,” culminating in the deception of the Antichrist (CCC 675). The heart of apostasy is an exchange: the truth of God traded for a solution that seems easier, such as a paradise built within history without God (CCC 676). The Church will pass through this trial “when she will follow her Lord in his death and Resurrection” (CCC 677).

Newman and Benedict XVI

St. John Henry Newman, gathering the teaching of the Fathers, put the link between apostasy and the Antichrist in one sentence: “The Man of Sin is born of an Apostasy, or at least comes into power through an apostasy.” Looking at his own century he saw “a confederacy of evil, marshalling its hosts from all parts of the world,” yet whether it would bring forth the Antichrist, he said, “we cannot know.” His counsel was watchfulness, not alarm: “every generation of Christians should be on the watch-tower, looking out” (Newman on the Antichrist).

Pope Benedict XVI described the modern form of the temptation: “Biblical hope in the Kingdom of God has been displaced by hope in the kingdom of man” (Spe Salvi 30). Announcing the Year of Faith, he spoke of “a profound crisis of faith that has affected many people” (Porta Fidei 2). He answered it not with predictions but with a call to rediscover the faith (Benedict XVI on hope).

Did the Church fall away long ago?

Some Christians use “the Great Apostasy” in a different sense: not a falling away still to come, but one that already happened to the Church itself. Some Protestant writers have held that the early Church fell into corruption, often dating the decline to the age of Constantine in the fourth century, and that the pure gospel survived only in small groups until it was recovered at the Reformation. The Church of Jesus Christ of Latter-day Saints teaches a fuller form of the idea: that after the deaths of the apostles the gospel was corrupted and “the Lord withdrew the authority of the priesthood from the earth,” until it was restored through Joseph Smith beginning in 1820 (Gospel Topics: Apostasy). Those who hold these views are seeking the faith of the apostles, and that desire deserves respect. Many Protestants reject the idea; the Augsburg Confession, for example, teaches “that one holy Church is to continue forever” (Article VII, trans. Bente and Dau).

The Catholic answer begins with Christ's promises. “Upon this rock I will build my church, and the gates of the netherworld shall not prevail against it” (Matthew 16:18). “And behold, I am with you always, until the end of the age” (Matthew 28:20). The Catechism draws the conclusion: the Church “is built on a lasting foundation,” “She is indestructible,” and “She is upheld infallibly in the truth” (CCC 869). Scripture foretells that many will fall away, not that the Church will vanish. And history bears witness to continuity: St. Irenaeus, writing around 180, learned the faith from St. Polycarp, who had known the apostle John, and the faith he describes, the Eucharist, the bishops in succession from the apostles, the resurrection of the body, is the faith the Catholic Church still professes (St. Irenaeus).

The Church does not claim that her members have always been faithful. She confesses that the Church, “clasping sinners to her bosom, at once holy and always in need of purification, follows constantly the path of penance and renewal” (CCC 827). Sin in the Church is real; the apostasy of the Church is what Christ promised would never happen.

How to live it

The warning is meant to make us watchful over ourselves, not suspicious of others. The great falling away is prepared by many small ones, and the remedies are the ordinary means the Church has always offered:

“But the one who perseveres to the end will be saved” (Matthew 24:13). For the deceiver whom the apostasy prepares, see Who Is the Antichrist?; for the Church's passage through the final trial, see Is There a Rapture?

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Where this site standsThis site sets no date for the apostasy or for Christ's return, for “it is not for you to know times or seasons which the Father has fixed by his own authority” (CCC 673). It names no living person, group or church leader as a fulfillment of prophecy. Private revelations, however well known, are kept in their place: “It is not their role to improve or complete Christ's definitive Revelation” (CCC 67). The warning is given so that we may stand firm, and the Lord who gives it is faithful.