Luke 12:10
and every one whoever shall say a word to the Son of Man, it shall be forgiven to him, but to him who to the Holy Spirit did speak evil, it shall not be forgiven.
Matthew 12:31-32
Because of this I say to you, all sin and evil speaking shall be forgiven to men, but the evil speaking of the Spirit shall not be forgiven to men.
1 John 5:16
If any one may see his brother sinning a sin not unto death, he shall ask, and He shall give to him life to those sinning not unto death; there is sin to death, not concerning it do I speak that he may beseech;
1 Timothy 1:13
who before was speaking evil, and persecuting, and insulting, but I found kindness, because, being ignorant, I did it in unbelief,
Mark 3:28-30
'Verily I say to you, that all the sins shall be forgiven to the sons of men, and evil speakings with which they might speak evil,
Luke 23:34
And Jesus said, 'Father, forgive them, for they have not known what they do;' and parting his garments they cast a lot.
Hebrews 6:4-8
for it is impossible for those once enlightened, having tasted also of the heavenly gift, and partakers having became of the Holy Spirit,
Hebrews 10:26-31
For we -- wilfully sinning after the receiving the full knowledge of the truth -- no more for sins doth there remain a sacrifice,