Doctrine of the Atonement
The word atonement, which is almost the only theological term of English origin, has a curious history. The verb "atone", from the adverbial phrase "at one" (M.E. at oon), at first meant to reconcile, or make "at one"; from this it came to denote the action by which such reconciliation was effected, e.g. satisfaction for all offense or an injury. Hence, in Catholic theology, the Atonement is the Satisfaction of Christ, whereby God and the world are reconciled or made to be at one. "For God indeed was in Christ, reconciling the world to himself" (2 Corinthians 5:19). The Catholic doctrine on this subject is set forth in the sixth Session of the Council of Trent, chapter ii. Having shown the insufficiency of Nature, and of Mosaic Law the Council continues:
Whence it came to pass, that the Heavenly Father, the Father of mercies and the God of all comfort (2 Corinthians 1, 3), when that blessed fullness of the time was come (Galatians 4:4) sent unto men Jesus Christ, His own Son who had been, both before the Law and during the time of the Law, to many of the holy fathers announced and promised, that He might both redeem the Jews, who were under the Law and that the Gentiles who followed not after justice might attain to justice and that all men might receive the adoption of sons. Him God had proposed as a propitiator, through faith in His blood (Romans 3:25), for our sins, and not for our sins only, but also for those of the whole world (I John ii, 2).