Matthew 12:31
So I tell you, every sin and all abusive speech will be forgiven men, but abuse against the Spirit cannot be forgiven.
1 Corinthians 6:9-11
Do you not know that wrongdoers will not have a share in the kingdom of God? Stop being misled; people who are sexually immoral or idolaters or adulterers or sensual or guilty of unnatural sexual vice
1 John 1:7
But if we continue to live in the light, just as He is in the light, we have unbroken fellowship with one another, and the blood of Jesus His Son continues to cleanse us from every sin.
1 John 1:9
If we confess our sins, He is to be depended on, since He is just, to forgive us our sins and to cleanse us from every wrong.
1 John 2:1-2
My dear children, I am writing you this so that you may not sin; yet if anyone ever sins, we have One who pleads our case with the Father, Jesus Christ, One who is righteous.