Luke 12:10
And anyone who speaks a word against the Son of Man will be forgiven, but no one who speaks abusively about the Holy Spirit will be forgiven.
Matthew 12:31-32
So I tell you, every sin and all abusive speech will be forgiven men, but abuse against the Spirit cannot be forgiven.
1 John 5:16
If anyone sees his brother committing a sin that does not lead to death, he will ask and God will grant him life; yea, He will grant it to any who do not commit a sin that leads to death. There is a sin that leads to death; I do not say that one should pray for that.
1 Timothy 1:13
though I once used to abuse, persecute, and insult Him. But mercy was shown me by Him, because I did it in ignorance and unbelief,
Mark 3:28-30
I solemnly say to you, men will be forgiven for all their sins and all the abusive things they say.
Luke 23:34
They drew lots to divide His clothes among them.
Hebrews 6:4-8
For it is impossible for those who have once for all been enlightened and have experienced the gift from heaven, who have been made sharers of the Holy Spirit
Hebrews 10:26-31
For if we go willfully sinning after we have received full knowledge of the truth, there is no sacrifice left to be offered for our sins,