The Sacrament of Reconciliation* from the Catechism of the Catholic Church*.
… and Jesus said, “Neither do I condemn you; go, and from now on sin no more.”(John 8:11).
“Those who approach the sacrament of Penance obtain pardon from God’s mercy for the offense committed against him, and are, at the same time, reconciled with the Church which they have wounded by their sins and which by charity, by example, and by prayer labors for their conversion.”