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, because the sacrament is prepared for by the word of God and by the faith which is assent to this word:
The People of God is formed into one in the first place by the Word of the living God.... The preaching of the Word is required for the sacramental ministry itself, since the sacraments are sacraments of faith, drawing their origin and nourishment from the Word.
Source: Catechism of the Catholic Church (Vatican.va)