1 John 5:16

If any one see his brother sinning a sin not to death, he shall ask, and he will give him life for those who sin not to death. There is a sin to death: I do not say concerning this, that he should ask.

Hebrews 6:4-6

For it is impossible to renew again to repentance those who have once been enlightened, and have tasted of the heavenly gift, and have been made partakers of the Holy Spirit,

Matthew 12:31-32

Therefore I say to you, That every sin and impious speech shad be forgiven men: but the impious speech against the Spirit shall not be forgiven men.

Luke 12:10

And whoever shall speak a word against the Son of man, it shall be forgiven him; but he that speaks impiously against the Holy Spirit, shall not be forgiven.

Mark 3:28-30

Verily I say to you, All sins shall be forgiven the sons of men, and whatever impious speeches they may utter;

John 17:9

I pray for them; I pray not for the world, but for them whom thou hast given me; for they are thine.

2 Timothy 4:14

Alexander the coppersmith did me much evil: the Lord repay him according to his works.

Hebrews 10:26-31

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

James 5:14-15

Is any one 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 pollutions of the world, through the knowledge of the Lord and Savior Jesus Christ, they are again entangled in these, and overcome by them, the last state of such is worse 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 one 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 say to you, That every sin and impious speech shad be forgiven men: but the impious speech against the Spirit shall not be forgiven men.
Mark 3:28
Verily I say to you, All sins shall be forgiven the sons of men, and whatever impious speeches they may utter;
Luke 12:10
And whoever shall speak a word against the Son of man, it shall be forgiven him; but he that speaks impiously against the Holy Spirit, shall not be forgiven.
2 Timothy 4:14
Alexander the coppersmith did me much evil: the Lord repay him according to his works.
Hebrews 6:4
For it is impossible to renew again to repentance those who have once been enlightened, and have tasted of the heavenly gift, and have been made partakers of the Holy Spirit,
Hebrews 10:26
For if we sin willfully, after we have received the knowledge of the truth, there remains no longer a sacrifice for sins;
2 Peter 2:20
For if, after they have escaped the pollutions of the world, through the knowledge of the Lord and Savior Jesus Christ, they are again entangled in these, and overcome by them, the last state of such is worse than the first.

I do not

John 17:9
I pray for them; I pray not for the world, but for them whom thou hast given me; for they are thine.

General references

Mark 3:28
Verily I say to you, All sins shall be forgiven the sons of men, and whatever impious speeches they may utter;
Luke 12:10
And whoever shall speak a word against the Son of man, it shall be forgiven him; but he that speaks impiously against the Holy Spirit, shall not be forgiven.
Jude 1:22
And on some, have compassion, making a distinction: