The Catechism in Questions & Answers

464. What transpires during the ordination?

During the ordination the blessing of God is imparted. The individual who has been called to ministry receives sanctification for this ministry. The corresponding ministerial authority is issued by the Apostle ministry, be it for the work of a diaconal ministry, priestly ministry, or Apostle. The minister receives the commission to discharge his ministry within a defined scope.

Sanctification: see Question 417.