The Fifth Head of Doctrine: The Perseverance of the Saints
Having set forth the orthodox teaching, the Synod rejects the errors of those
Who teach that Christ nowhere prayed for an unfailing perseverance of believers in faith.
For they contradict Christ himself when he says: I have prayed for you, Peter, that your faith may not fail (Luke 22:32); and John the gospel writer when he testifies in John 17 that it was not only for the apostles, but also for all those who were to believe by their message that Christ prayed: Holy Father, preserve them in your name (v. 11); and My prayer is not that you take them out of the world, but that you preserve them from the evil one (v. 15).
Daily Confession 