How do we know that salvation comes through Christ alone?

The doctrine of salvation through Christ alone is grounded in the reality that no one can be justified by their works; it is only through faith in Jesus Christ that we are saved. As articulated in Proverbs 21:3, it is said, 'To do justice and judgment is more acceptable to the Lord than sacrifice.' While the sacrifices of the Old Testament were important, they pointed ultimately to Christ, who is the perfect sin-atoning sacrifice. Christ's sacrifice on Calvary fulfills all Old Testament typology and proves sufficient for our justification. In Ephesians 2:8-9, we are reminded that it is by grace we are saved through faith, and that not of ourselves; it is the gift of God, not of works, lest any man should boast. Therefore, salvation rests solely in what Christ has accomplished for us on the cross.