1 John 5:16

If any one see his brother sin a sin which is not unto death, let him ask, and he will give him life for them that sin not unto death.

Hebrews 6:4-6

For it is impossible for those who were once inlightened, and have tasted the heavenly gift, and been made partakers of the Holy Ghost,

Matthew 12:31-32

Wherefore I say to you, All manner of sin and blasphemy shall be forgiven to men; but the blasphemy of the Holy Ghost shall not be forgiven to men.

Luke 12:10

And whosoever shall speak against the Son of man, it shall be forgiven him: but to him that blasphemeth against the Holy Ghost, it shall not be forgiven.

Mark 3:28-30

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

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 will reward him according to his works.

Hebrews 10:26-31

For when we sin wilfully after receiving the knowledge of the truth, there remaineth no more 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, having anointed 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, thro the knowledge of the Lord and Saviour Jesus Christ, they are again intangled therein and overcome, their last state is worse then 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, having anointed him with oil in the name of the Lord:

There

Matthew 12:31
Wherefore I say to you, All manner of sin and blasphemy shall be forgiven to men; but the blasphemy of the Holy Ghost shall not be forgiven to men.
Mark 3:28
Verily I say to you, All sins shall be forgiven the sons of men and blasphemies wherewith soever they shall blaspheme.
Luke 12:10
And whosoever shall speak against the Son of man, it shall be forgiven him: but to him that blasphemeth against the Holy Ghost, it shall not be forgiven.
2 Timothy 4:14
Alexander the coppersmith did me much evil; the Lord will reward him according to his works.
Hebrews 6:4
For it is impossible for those who were once inlightened, and have tasted the heavenly gift, and been made partakers of the Holy Ghost,
Hebrews 10:26
For when we sin wilfully after receiving the knowledge of the truth, there remaineth no more sacrifice for sins,
2 Peter 2:20
For if after they have escaped the pollutions of the world, thro the knowledge of the Lord and Saviour Jesus Christ, they are again intangled therein and overcome, their last state is worse then 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 blasphemies wherewith soever they shall blaspheme.
Luke 12:10
And whosoever shall speak against the Son of man, it shall be forgiven him: but to him that blasphemeth against the Holy Ghost, it shall not be forgiven.
Jude 1:22
And some, that are wavering, convince; Some save, snatching them out of the fire;