Christ defeated sin

Because Christ has defeated sin

For sin will have no dominion over you, since you are not under law but under grace. (Romans 6:14)

 ¹⁸ to open their eyes, so that they may turn from darkness to light and from the power of Satan to God, that they may receive forgiveness of sins and a place among those who are sanctified by faith in me.’ (Acts 26:18)

 “Blessed are those whose lawless deeds are forgiven, and whose sins are covered; (Romans 4:7)

I am forgiven

¹³ And you, who were dead in your trespasses and the uncircumcision of your flesh, God made alive together with him, having forgiven us all our trespasses, ¹⁴ by canceling the record of debt that stood against us with its legal demands. This he set aside, nailing it to the cross. (Colossians 2:13-14)

 And behold, some people brought to him a paralytic, lying on a bed. And when Jesus saw their faith, he said to the paralytic, “Take heart, my son; your sins are forgiven.” (Matthew 9:2)

 Indeed, under the law almost everything is purified with blood, and without the shedding of blood there is no forgiveness of sins. (Hebrews 9:22)

I am writing to you, little children, because your sins are forgiven for his name's sake.  (1 John 2:12)