The Catechism in Questions & Answers

438. How did this special position of Apostle Peter manifest itself after the ascension of the Lord?

After the ascension of the Lord the special position of Apostle Peter showed itself in the fact that

  • Judas Iscariot was replaced within the circle of the Apostles at his initiative (cf. Acts 1: 15-26),
  • it was he who delivered the sermon on Pentecost (cf. Acts 2: 14),
  • the Lord revealed to him that salvation in Christ is also intended for the Gentiles (cf. Acts 10).