1 Christ the Lord, Son of the living God, came that He might save His people from their sins and that all men might be sanctified. Just as He Himself was sent by the Father, so He also sent His Apostles. Therefore, He sanctified them, conferring on them the Holy Spirit, so that they also might glorify the Father upon earth and save men, "to the building up of the body of Christ" (Eph. 4:12), which is the Church.
Source: Christus Dominus (Vatican.va)