Heidelberg Catechism 16.43

Chapter 16 — Lord's Day 16

Section 43. Q. 43: What further benefit do we receive from Christ's sacrifice and death on the cross? A. Through Christ's death our old selves are crucified, put to death, and buried with him, so that the evil desires of the flesh may no longer rule us, but that instead we may dedicate ourselves as an offering of gratitude to him.