1Jn 4, 10 God sent his Son as expiation for our sins

(1Jn 4, 10) God sent his Son as expiation for our sins
[10] In this is love: not that we have loved God, but that he loved us and sent his Son as expiation for our sins.

(CCC 604) By giving up his own Son for our sins, God manifests that his plan for us is one of benevolent love, prior to any merit on our part: "In this is love, not that we loved God but that he loved us and sent his Son to be the expiation for our sins" (1 John 4:10; 4:19). God "shows his love for us in that while we were yet sinners Christ died for us" (Rom 5:8). (CCC 614) This sacrifice of Christ is unique; it completes and surpasses all other sacrifices (Cf. Heb 10:10). First, it is a gift from God the Father himself, for the Father handed his Son over to sinners in order to reconcile us with himself. At the same time it is the offering of the Son of God made man, who in freedom and love offered his life to his Father through the Holy Spirit in reparation for our disobedience (Cf. Jn 10:17-18, 15:13; Heb 9:14; 1 Jn 4:10). (CCC 620) 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).