Luke 22 in the context of "Olivet Discourse"

The infallibility of the Church is the belief that the Holy Spirit preserves the Christian Church from errors that would contradict its essential doctrines. It is related to, but not the same as, indefectibility, that is, "she remains and will remain the Institution of Salvation, founded by Christ, until the end of the world." The doctrine of infallibility is premised on the authority Jesus granted to the apostles to "bind and loose" (Matthew 18:18; John 20:23) and in particular the promises to Peter (Matthew 16:16–20; Luke 22:32) in regard to papal infallibility.

Mark 14 is the fourteenth chapter of the Gospel of Mark in the New Testament of the Christian Bible. It contains the plot to kill Jesus, his anointing by a woman, the Last Supper, predictions of his betrayal, and Peter the Apostle's three denials of him. It then begins the Passion of Jesus, with the garden of Gethsemane and Judas Iscariot's betrayal and Jesus' arrest, followed by Jesus' trial before the Sanhedrin and Peter's denials of Jesus.

Having 72 verses, this is the longest chapter in Mark's Gospel. The Gospel of Matthew's chapter which covers the same material, Matthew 26, has 75 verses. This chapter's material is presented somewhat differently in Luke 22, which has 71 verses. Jesus' arrest at Gethsemane, his trial, and Peter's denials are found in John 18:1–27.