Matthew 12:31

Therefore I say unto you, All sin and blasphemy shall be forgiven to men; but the blasphemy against the Spirit shall not be forgiven to men.

Luke 12:10

And every one who shall utter a word against the Son of man, it shall be forgiven him; but for him who hath blasphemed against the Holy Ghost, there shall be no forgiveness.

Mark 3:28-30

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

Acts 7:51

Ye stiff-necked and uncircumcised in heart and in ears, ye do always oppose yourselves against the Holy Ghost: as your fathers, so are ye.

Hebrews 6:4

For it is not possible to renew again unto repentance those who have been once illuminated, and have tasted the celestial gift, and have been made partakers of the Holy Ghost,

Hebrews 10:26

For if we sin wilfully after we have received the knowledge of the truth, no more sacrifice for sins remaineth;

Hebrews 10:29

by how much, think ye, shall he be counted worthy of more condign punishment who hath trampled on the Son of God, and regarded the blood of his testament, by which he was sanctified, as an unclean thing, and hath treated the gracious Spirit contumeliously?

1 John 1:9

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

1 John 5:16

If any person see his brother committing a sin not unto death, he shall request, and God will grant him life for those that sin not unto death. There is a sin unto death: I say not that he should request for that.

Matthew 12:31-32

Therefore I say unto you, All sin and blasphemy shall be forgiven to men; but the blasphemy against the Spirit shall not be forgiven to men.

1 Timothy 1:13-15

who was before a blasphemer, and a persecutor, and insolently violent, But I was admitted to mercy, for I did it ignorantly in unbelief;

1 John 2:1-2

MY dear children, these things I write to you, that ye should not sin. And if any of us 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
who was before a blasphemer, and a persecutor, and insolently violent, But I was admitted to mercy, for I did it ignorantly in unbelief;
Hebrews 6:4
For it is not possible to renew again unto repentance those who have been once illuminated, and have tasted the celestial gift, and have been made partakers of the Holy Ghost,
1 John 1:9
If we confess our sins, faithful is he and righteous to forgive us our sins, and to cleanse us from all unrighteousness.
1 John 2:1
MY dear children, these things I write to you, that ye should not sin. And if any of us sin, we have an advocate with the Father, Jesus Christ the righteous:

But

Mark 3:28
Verily I say unto you, That all sins shall be forgiven to the sons of men, and the blasphemies, whatsoever they may blaspheme:
Luke 12:10
And every one who shall utter a word against the Son of man, it shall be forgiven him; but for him who hath blasphemed against the Holy Ghost, there shall be no forgiveness.
Acts 7:51
Ye stiff-necked and uncircumcised in heart and in ears, ye do always oppose yourselves against the Holy Ghost: as your fathers, so are ye.
1 John 5:16
If any person see his brother committing a sin not unto death, he shall request, and God will grant him life for those that sin not unto death. There is a sin unto death: I say not that he should request for that.

General references

Mark 3:28
Verily I say unto you, That all sins shall be forgiven to the sons of men, and the blasphemies, whatsoever they may blaspheme:
Luke 12:10
And every one who shall utter a word against the Son of man, it shall be forgiven him; but for him who hath blasphemed against the Holy Ghost, there shall be no forgiveness.