Of Those Who Receive the Sacrament of Penance

We must now consider the recipients of the sacrament of Penance: under which head there are three points of inquiry:(1) Whether penance can be in the innocent?(2) Whether it can be in the saints in glory?(3) Whether in the good or bad angels?

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Whether penance can be in the innocent?
Whether the saints in glory have penance?
Whether an angel can be the subject of penance?