Mark 3:28

Verily, I say unto you - All things shall be forgiven unto the sons of men, - the sins and the profanities wherewithal they shall profane;

Matthew 12:31-32

Wherefore, I say unto you, All sin and profane speaking, shall be forgiven unto men, - but, the speaking profanely of the Spirit, shall not be forgiven;

Luke 12:10

And, whosoever shall say a word against the Son of Man, it shall be forgiven him; but, unto him who, against the Holy Spirit, speaketh profanely, it shall not be forgiven.

1 John 5:16

If one should see his brother committing a sin, not unto death, he shall ask, and He will grant unto him life, - for them who are sinning, not unto death. There, is, a sin, unto death: not concerning that, am I saying, that he should make request.

Mark 3:28-30

Verily, I say unto you - All things shall be forgiven unto the sons of men, - the sins and the profanities wherewithal they shall profane;

Hebrews 6:4-8

For it is impossible - as to these who have been, once for all, illuminated, who have tasted also of the heavenly free-gift, and have been made, partners, in a Holy Spirit,

Hebrews 10:26-31

For, if, by choice, we be sinning, after the receiving of the full-knowledge of the truth, no longer, for sins, is there left over, a sacrifice,

Treasury of Scripture Knowledge

Summary

Verily I say unto you, All sins shall be forgiven unto the sons of men, and blasphemies wherewith soever they shall blaspheme:

Bible References

General references

Matthew 12:31
Wherefore, I say unto you, All sin and profane speaking, shall be forgiven unto men, - but, the speaking profanely of the Spirit, shall not be forgiven;
Luke 12:10
And, whosoever shall say a word against the Son of Man, it shall be forgiven him; but, unto him who, against the Holy Spirit, speaketh profanely, it shall not be forgiven.
Hebrews 6:4
For it is impossible - as to these who have been, once for all, illuminated, who have tasted also of the heavenly free-gift, and have been made, partners, in a Holy Spirit,
Hebrews 10:26
For, if, by choice, we be sinning, after the receiving of the full-knowledge of the truth, no longer, for sins, is there left over, a sacrifice,
1 John 5:16
If one should see his brother committing a sin, not unto death, he shall ask, and He will grant unto him life, - for them who are sinning, not unto death. There, is, a sin, unto death: not concerning that, am I saying, that he should make request.