A priest cannot forgive sins that are not confessed to them.
The Sacrament of Reconciliation, also known as Confession, is a core practice in the Catholic Church. It allows individuals to confess their sins to a priest, receive absolution, and experience God's forgiveness.
However, a priest can only forgive sins that are brought to their attention through confession. If a person does not confess a sin, it remains unconfessed and unforgiven.
This does not mean that God cannot forgive sins that are not confessed. God is merciful and always willing to forgive. However, the Sacrament of Reconciliation provides a specific way for individuals to receive forgiveness through the Church.
Additionally, there are certain sins that require special dispensation from the Pope, such as excommunication. These sins are not typically forgiven by a priest in the normal course of Confession.
It is important to note that the concept of "unforgivable sins" is a complex theological topic. While there are some sins that are considered "mortal sins" (e.g., murder, adultery), the Church maintains that God's mercy is boundless and that even the gravest sins can be forgiven through sincere repentance and confession.