1 John 5:16

If anyone sees his brother commit a sin that does not lead to death, he will ask, and God will give him life for those whose sin is not leading to death. There is sin leading to death. I do not say that he should pray about that.

Hebrews 6:4-6

For it is impossible for those who have once been enlightened, who have tasted the heavenly gift, and have become partakers of the Holy Spirit,

Matthew 12:31-32

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

Luke 12:10

And everyone who speaks a word against the Son of Man will be forgiven; but he who blasphemes against the Holy Spirit will not be forgiven.

Mark 3:28-30

Truly, I say to you, all sins will be forgiven the sons of men, and whatever blasphemies they utter;

John 17:9

I pray for them. I am not praying for the world, but for those whom you have given me, for they are yours.

2 Timothy 4:14

Alexander the coppersmith did me great harm; the Lord will repay him for his deeds.

Hebrews 10:26-31

For if we sin deliberately after we have received the knowledge of the truth, there no longer remains a sacrifice for sins,

James 5:14-15

Is any among you sick? Let him call for the elders of the church, and let them pray over him, anointing him with oil in the name of the Lord;

2 Peter 2:20-22

For if, after they have escaped the defilements of the world by the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them and are overcome, the last state has become worse for them than the first.

Treasury of Scripture Knowledge

Summary

If any man see his brother sin a sin which is not unto death, he shall ask, and he shall give him life for them that sin not unto death. There is a sin unto death: I do not say that he shall pray for it.

He shall ask

I do not

General references

Bible References

He shall ask

James 5:14
Is any among you sick? Let him call for the elders of the church, and let them pray over him, anointing him with oil in the name of the Lord;

There

Matthew 12:31
Therefore I tell you, every sin and blasphemy will be forgiven men, but the blasphemy against the Spirit will not be forgiven.
Mark 3:28
Truly, I say to you, all sins will be forgiven the sons of men, and whatever blasphemies they utter;
Luke 12:10
And everyone who speaks a word against the Son of Man will be forgiven; but he who blasphemes against the Holy Spirit will not be forgiven.
2 Timothy 4:14
Alexander the coppersmith did me great harm; the Lord will repay him for his deeds.
Hebrews 6:4
For it is impossible for those who have once been enlightened, who have tasted the heavenly gift, and have become partakers of the Holy Spirit,
Hebrews 10:26
For if we sin deliberately after we have received the knowledge of the truth, there no longer remains a sacrifice for sins,
2 Peter 2:20
For if, after they have escaped the defilements of the world by the knowledge of the Lord and Savior Jesus Christ, they are again entangled in them and are overcome, the last state has become worse for them than the first.

I do not

John 17:9
I pray for them. I am not praying for the world, but for those whom you have given me, for they are yours.

General references

Mark 3:28
Truly, I say to you, all sins will be forgiven the sons of men, and whatever blasphemies they utter;
Luke 12:10
And everyone who speaks a word against the Son of Man will be forgiven; but he who blasphemes against the Holy Spirit will not be forgiven.
Jude 1:22
And have mercy on some, who doubt;