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Catechism of the Catholic Church

II. THE DEFINITION OF SIN

1849 Sin is an offense against reason, truth, and right conscience; it is failure in genuine love for God and neighbor caused by a perverse attachment to certain goods. It wounds the nature of man and injures human solidarity. It has been defined as "an utterance, a deed, or a desire contrary to the eternal law." 121

1850 Sin is an offense against God: "Against you, you alone, have I sinned, and done that which is evil in your sight." 122 Sin sets itself against God's love for us and turns our hearts away from it. Like the first sin, it is disobedience, a revolt against God through the will to become "like gods," 123 knowing and determining good and evil. Sin is thus "love of oneself even to contempt of God." 124 In this proud self- exaltation, sin is diametrically opposed to the obedience of Jesus, which achieves our salvation. 125

1851 It is precisely in the Passion, when the mercy of Christ is about to vanquish it, that sin most clearly manifests its violence and its many forms: unbelief, murderous hatred, shunning and mockery by the leaders and the people, Pilate's cowardice and the cruelty of the soldiers, Judas' betrayal - so bitter to Jesus, Peter's denial and the disciples' flight. However, at the very hour of darkness, the hour of the prince of this world, 126 the sacrifice of Christ secretly becomes the source from which the forgiveness of our sins will pour forth inexhaustibly.

Notes:

121 St. Augustine, Contra Faustum 22: PL 42, 418; St. Thomas Aquinas, STh I-II, 71, 6.

122 Ps 51:4.

123 Gen 3:5.

124 St. Augustine, De civ. Dei 14, 28: PL 41, 436.

125 Cf. Phil 2:6-9.

126 Cf. Jn 14:30.

English Translation of the Cathechism of the Catholic Church for the United States of America © 1997, United States Catholic Conference, Inc.

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