The Catechism in Questions & Answers

421. Which ministry was instituted by Jesus Christ?

Jesus Christ only gave His church one ministry directly, namely the Apostle ministry. He authorised, blessed, and sanctified the Apostles and equipped them with the Holy Spirit: “‘As the Father has sent Me, I also send you.’ And when He had said this, He breathed on them, and said to them, ‘Receive the Holy Spirit. If you forgive the sins of any, they are forgiven them; if you retain the sins of any, they are retained’” (John 20: 21-23). He entrusted the dispensation of the sacraments to the Apostles. In this manner His sacrifice becomes accessible to human beings (cf. Matthew 28: 19-20).

The authority of the Apostles to “dispense the sacraments” refers to the fact that the Apostles have been commissioned by Jesus Christ to dispense the sacraments. Even if not all sacraments are dispensed by Apostles themselves, the sacraments nevertheless exist in relationship to the Apostle ministry (concerning this see also Question 424).