1 John 5:16

If anyone sees his brother committing a sin not leading to death, he should ask God, who will give life to those who commit this kind of sin. There is a sin that leads to death; I am not saying he should ask regarding that sin.
BSB · Berean Standard Bible
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.
KJV · King James Version
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 sin leading to death. I don’t say that he should make a request concerning this.
WEB · World English Bible
If any man see his brother sinning a sin not unto death, he shall ask, and God will give him life for them that sin not unto death. There is a sin unto death: not concerning this do I say that he should make request.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

he shall ask
Genesis 20:7, 17; Exodus 32:10–14, 31, 32; Exodus 34:9; Numbers 12:13; Numbers 14:11–21; Deuteronomy 9:18–20; 2 Chronicles 30:18–20; Job 42:7–9; Psalm 106:23; Ezekiel 22:30; Amos 7:1–3; James 5:14, 15
There
Numbers 15:30; Numbers 16:26–32; 1 Samuel 2:25; Jeremiah 15:1, 2; Matthew 12:31, 32; Mark 3:28–30; Luke 12:10; 2 Timothy 4:14; Hebrews 6:4–6; Hebrews 10:26–31; 2 Peter 2:20–22
I do not
Jeremiah 7:16; Jeremiah 11:14; Jeremiah 14:11; Jeremiah 18:18–21; John 17:9