"A person who rails at God in adversity, suffers without merit; moreover by his lack of resignation he adds to his punishment in the next life and experiences greater disquietude of mind in this life."

St Alphonsus de Liguori

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"The more you know and the better you understand, the more severely will you be judged, unless your life is also the more holy. Do not be proud, therefore, because of your learning or skill. Rather, fear because of the talent given you."

Thomas á Kempis

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"Men should often renew their good resolutions, and not lose heart because they are tempted against them."

St Philip Neri

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"I am the Way, the Truth and the Life"  - John 14:6

Redemption

IN BRIEF

"Christ died for our sins in accordance with the scriptures" (1 Cor 15:3).

Our salvation flows from God's initiative of love for us, because "he loved us and sent his Son to be the expiation for our sins" (1 Jn 4:10). "God was in Christ reconciling the world to himself" (2 Cor 5:19).

Jesus freely offered himself for our salvation. Beforehand, during the Last Supper, he both symbolized this offering and made it really present: "This is my body which is given for you" (Lk 22:19).

The redemption won by Christ consists in this, that he came "to give his life as a ransom for many" (Mt 20:28), that is, he "loved [his own] to the end" (fn 13:1), so that they might be "ransomed from the futile ways inherited from [their] fathers"(1 Pet 1:18).

By his loving obedience to the Father, "unto death, even death on a cross" (Phil 2:8), Jesus fulfills the atoning mission (cf. Isa 53:10) of the suffering Servant, who will "make many righteous; and he shall bear their iniquities" (Isa 53:11; cf. Rom 5:19).

- Paras 619 to 623 of The Catechism of the Catholic Church

For a fuller explanation of this mystery, go to this commentary on the Summa Theologica of St Thomas Aquinas.