Rom 4:6-8,25, Acts 13:38-39

In the Old Testament, David confessed that blessed are those whose sins are forgiven. (Psalms 32:1)

Psalms 32:1 Blessed is he whose transgression is forgiven, whose sin is covered.

Jesus died for our sins and we are justified by faith in that fact. (Rom 4:6-8,25, Acts 13:38-39)

Rom 4:6 Even as David also describeth the blessedness of the man, unto whom God imputeth righteousness without works, 7 Saying, Blessed are they whose iniquities are forgiven, and whose sins are covered. 8 Blessed is the man to whom the Lord will not impute sin. 25 Who was delivered for our offences, and was raised again for our justification.

Acts 13:38 Be it known unto you therefore, men and brethren, that through this man is preached unto you the forgiveness of sins: 39 And by him all that believe are justified from all things, from which ye could not be justified by the law of Moses.