The Catechism in Questions & Answers

177. To what purpose did Jesus have to suffer and die?

God, the Son, became human in Jesus and came into the world in order to take the sins of mankind upon Himself. He brought the sacrifice by His own free will in divine love in order to deliver mankind from death. The power of sin is great, but the power of divine love, which is demonstrated by the fact that Jesus Christ surrendered His life, is even stronger.

Deliverance from spiritual death / Redemption: see Questions 89.-90., 108.-109., 215.-216.

“Greater love has no one than this, than to lay down one’s life for his friends.”
John 15: 13