The Forgiveness of Sins
The Church is incapable of forgiving any sin without Christ, and Christ is unwilling to forgive any sin without the Church. The Church cannot forgive the sin of one who has not repented, who has not been touched by Christ; Christ will not forgive the sin of one who despises the Church. What God has joined together, man must not separate. This is a great mystery, but I understand it as referring to Christ and the Church.
Do not destroy the whole Christ by separating head from body, for Christ is not complete without the Church, nor is the Church complete without Christ. The whole and complete Christ is head and body. This is why he said: No one has ever ascended into heaven except the Son of Man whose is in heaven. He is the only man who can forgive sin.
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From a sermon by blessed Isaac of Stella, abbot
The Office of Readings: Friday, 23rd Week in Ordinary Time
