Luke 12:10
Everyone who speaks a word against the Son of Man will be forgiven, but the person who blasphemes against the Holy Spirit won't be forgiven.
Matthew 12:31-32
So I tell you, every sin and blasphemy will be forgiven, but blasphemy against the Spirit will not be forgiven.
1 John 5:16
If anyone sees his brother committing a sin that does not lead to death, he should pray that God would give him life. This applies to those who commit sins that do not lead to death. There is a sin that leads to death. I am not telling you to pray about that.
1 Timothy 1:13
In the past I was a blasphemer, a persecutor, and a violent man. But I received mercy because I acted ignorantly in my unbelief,
Mark 3:28-30
I tell all of you with certainty, people will be forgiven their sins and whatever blasphemies they utter.
Luke 23:34
Jesus kept saying, "Father, forgive them, because they don't know what they're doing." Then they divided his clothes among them by throwing dice.
Hebrews 6:4-8
For it is impossible to keep on restoring to repentance time and again people who have once been enlightened, who have tasted the heavenly gift, who have become partners with the Holy Spirit,
Hebrews 10:26-31
For if we choose to go on sinning after we have learned the full truth, there no longer remains a sacrifice for sins,