On Sin

Sin, the mystery of iniquity, revealed both as mortal sin and venial sin, demands our reaction and our rejection. This in turn requires vigilance and prayer, the prayer that helps us in temptation, the prayer of reparation of God, of expiation in union with Christ who was made sin by his Father. We also have the testimony of the saints to the effectiveness of prayer to our Blessed Mother to avoid sin: O Mary, conceived without sin, pray for us who have recourse to you!
--Justin Cardinal Rigali