Luke 12:10
He who speaks against the Son of man will be forgiven. However he who blasphemes against Holy Spirit will not be forgiven.
Matthew 12:31-32
Therefore I say to you, every sin and blasphemy will be forgiven men. But the blasphemy against God's Spirit will not be forgiven.
1 John 5:16
If any man see his brother committing a sin not leading to death, he will ask, and God will give him life for them that sin not leading to death. There is a sin that leads to death. I do not say that he should make request concerning this.
1 Timothy 1:13
I was a blasphemer, and a persecutor, and a violent aggressor. I was shown mercy, because I did it ignorantly in unbelief.
Mark 3:28-30
I tell you sins will be forgiven of the sons of men, and their evil talk will be forgiven.
Luke 23:34
[Jesus said: Father, forgive them for they do not know what they do.](This verse not found in older manuscripts.) They cast lots and divided his garments among themselves.
Hebrews 6:4-8
Those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Spirit,
Hebrews 10:26-31
If we continue to (practice) (deliberately persist in) sin willfully after we have received the knowledge of the truth, there remains no more sacrifice for sins.