Matthew 12:31

Therefore I say unto you, every sin and blasphemy shall be forgiven unto men; but the blasphemy of the Spirit shall not be forgiven unto men.

Luke 12:10

And every one who shall speak a word against the Son of man, it shall be forgiven him: but to him having blasphemed against the Holy Ghost, it shall not be forgiven.

Mark 3:28-30

Truly I say unto you, that all sins shall be forgiven unto the sons of men, and blasphemies whatsoever they may blaspheme:

Acts 7:51

Ye stiffnecked and uncircumcised in heart and ears, you do always resist the Holy Ghost; as your fathers did, so do ye.

Hebrews 6:4

For it is impossible that those having been once enlightened, and tasted the heavenly gift, and have been made partakers of the Holy Ghost,

Hebrews 10:26

For we sinning willingly after we have received the perfect knowledge of the truth, there is left no more sacrifice for sins,

Hebrews 10:29

of how much more terrible punishment, do you think, the one having trodden under foot the Son of God, and counted the blood of the covenant, by which he was sanctified, common, and insulted the Spirit of grace; be counted worthy!

1 John 1:9

If we confess our sins, he is faithful and righteous that he may forgive us our sins, and cleanse us from all unrighteousness.

1 John 5:16

If any one may see his brother sinning a sin not unto death, he shall ask, and he will give him life to those sinning not unto death. There is a sin unto death; concerning this I do not say that you may ask.

Matthew 12:31-32

Therefore I say unto you, every sin and blasphemy shall be forgiven unto men; but the blasphemy of the Spirit shall not be forgiven unto men.

1 Timothy 1:13-15

being antecedently a blasphemer, and a persecutor, and an insulter: but I obtained mercy, because I did it in unbelief being ignorant;

1 John 2:1-2

My little children, I write these things to you, in order that you may not sin. And if any one may sin, we have an Advocate with the Father, Jesus Christ the righteous:

Treasury of Scripture Knowledge

Summary

Wherefore I say unto you, All manner of sin and blasphemy shall be forgiven unto men: but the blasphemy against the Holy Ghost shall not be forgiven unto men.

General references

Bible References

All

1 Timothy 1:13
being antecedently a blasphemer, and a persecutor, and an insulter: but I obtained mercy, because I did it in unbelief being ignorant;
Hebrews 6:4
For it is impossible that those having been once enlightened, and tasted the heavenly gift, and have been made partakers of the Holy Ghost,
1 John 1:9
If we confess our sins, he is faithful and righteous that he may forgive us our sins, and cleanse us from all unrighteousness.
1 John 2:1
My little children, I write these things to you, in order that you may not sin. And if any one may sin, we have an Advocate with the Father, Jesus Christ the righteous:

But

Mark 3:28
Truly I say unto you, that all sins shall be forgiven unto the sons of men, and blasphemies whatsoever they may blaspheme:
Luke 12:10
And every one who shall speak a word against the Son of man, it shall be forgiven him: but to him having blasphemed against the Holy Ghost, it shall not be forgiven.
Acts 7:51
Ye stiffnecked and uncircumcised in heart and ears, you do always resist the Holy Ghost; as your fathers did, so do ye.
1 John 5:16
If any one may see his brother sinning a sin not unto death, he shall ask, and he will give him life to those sinning not unto death. There is a sin unto death; concerning this I do not say that you may ask.

General references

Mark 3:28
Truly I say unto you, that all sins shall be forgiven unto the sons of men, and blasphemies whatsoever they may blaspheme:
Luke 12:10
And every one who shall speak a word against the Son of man, it shall be forgiven him: but to him having blasphemed against the Holy Ghost, it shall not be forgiven.