Youcat commented through CCC – Question n. 231.

YOUCAT Question n. 231 - What are the two basic elements required for the forgiveness of a Christian’s sins to occur in the sacrament of Penance?

(Youcat answer) What is required for the forgiveness of sins is the person who undergoes conversion and the priest who in God’s name gives him absolution from his sins.

A deepening through CCC

(CCC 1448) Beneath the changes in discipline and celebration that this sacrament has undergone over the centuries, the same fundamental structure is to be discerned. It comprises two equally essential elements: on the one hand, the acts of the man who undergoes conversion through the action of the Holy Spirit: namely, contrition, confession, and satisfaction; on the other, God's action through the intervention of the Church. The Church, who through the bishop and his priests forgives sins in the name of Jesus Christ and determines the manner of satisfaction, also prays for the sinner and does penance with him. Thus the sinner is healed and re-established in ecclesial communion. (CCC 1490) The movement of return to God, called conversion and repentance, entails sorrow for and abhorrence of sins committed, and the firm purpose of sinning no more in the future. Conversion touches the past and the future and is nourished by hope in God's mercy.

Reflecting and meditating   

(CCC Comment)

(CCC 1491) The sacrament of Penance is a whole consisting in three actions of the penitent and the priest's absolution. The penitent's acts are repentance, confession or disclosure of sins to the priest, and the intention to make reparation and do works of reparation. (CCC 1492) Repentance (also called contrition) must be inspired by motives that arise from faith. If repentance arises from love of charity for God, it is called "perfect" contrition; if it is founded on other motives, it is called "imperfect." (CCC 1493) One who desires to obtain reconciliation with God and with the Church, must confess to a priest all the unconfessed grave sins he remembers after having carefully examined his conscience. The confession of venial faults, without being necessary in itself, is nevertheless strongly recommended by the Church.  

(The next question is:  What must I bring to a confession?)