Bible Verses About Unpardonable Sin: General references

and also for the innocent blood that he shed; for he filled Jerusalem with innocent blood: and the LORD would not pardon.

Therefore I tell you, every sin and blasphemy will be forgiven men, but the blasphemy against the Spirit will not be forgiven men.

Whoever speaks a word against the Son of Man, it will be forgiven him; but whoever speaks against the Holy Spirit, it will not be forgiven him, neither in this age, nor in that which is to come.

Everyone who speaks a word against the Son of Man will be forgiven, but those who blaspheme against the Holy Spirit will not be forgiven.

For concerning those who were once enlightened and tasted of the heavenly gift, and were made partakers of the Holy Spirit,

and tasted the good word of God, and the powers of the age to come,

and then fell away, it is impossible to renew them again to repentance; seeing they crucify the Son of God for themselves again, and put him to open shame.

If anyone sees his brother sinning a sin not leading to death, he shall ask, and God will give him life for those who sin not leading to death. There is a sin leading to death. I don’t say that he should make a request concerning this.