Guarding the deposit of the Faith is the mission which the Lord entrusted to HIs Church...and which She fulfills in every age. The Church's apostolic and pastoral mission is to make the truth of the Gospel shine forth to lead all people to seek and receive Christ's love which surpasses all knowledge. (From Fidei Depositum by Pope John Paul I after the Second Vatican Council)
Christ sent his apostles so that repentance and forgiveness of sins should be preached in his name to all nations. "Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit." The mission to baptize, and so the sacramental mission, is implied in the mission to evangelize. (From the Catechism of the Catholic Church, Article 2, Section 3, Paragraph 1122)