The Catechism in Questions & Answers

479. Which sacraments were instituted by Jesus Christ?

Jesus Christ instituted three sacraments: Holy Baptism with water, Holy Sealing, and Holy Communion.

Holy Baptism with water: see Questions 481. et seq. Holy Sealing: see Questions 515. et seq. Holy Communion: see Questions 494. et seq.

“And there are three that bear witness on earth: the Spirit, the water, and the blood; and these three agree as one.” 1 John 5: 7, 8