Luke 12:10
And every one that speaks a word against the Son of man shall have forgiveness; but he that blasphemes against the Holy Spirit shall not be forgiven.
Matthew 12:31-32
Therefore, I tell you, every sin and blasphemy shall be forgiven men, but the blasphemy of the Spirit shall not be forgiven men.
1 John 5:16
If any one sees his brother commit a sin, not to death, he shall ask, and he will give him life, for those who sin not to death. There is a sin to death; I say not that you should pray for it.
1 Timothy 1:13
who formerly was a blasphemer and persecutor and an injurious man; but I obtained mercy because I did those things ignorantly in unbelief;
Mark 3:28-30
I tell you truly, That all sins and blasphemies with which they blaspheme shall be forgiven the children of men;
Luke 23:34
And Jesus said, Father, forgive them, for they know not what they do. And distributing his garments they cast lots [for them].
Hebrews 6:4-8
For those once enlightened and having tasted of the heavenly gift and been made partakers of the Holy Spirit,
Hebrews 10:26-31
For if we sin willingly after having received the knowledge of the truth, there is no longer a sacrifice left for sins,