Verse Comparison: 1 John 5:16
American Standard Version
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.
Amplified® Bible
If anyone sees his brother [believer] committing a sin that does not [lead to] death (the extinguishing of life), he will pray and [God] will give him life [yes, He will grant life to all those whose sin is not one leading to death]. There is a sin [that leads] to death; I do not say that one should pray for that.
Darby English Version
If any one see his brother sinning a sin not unto death, he shall ask, and he shall give him life, for those that do not sin unto death. There is a sin to death: I do not say of that that he should make a request.
International Standard Version
If anyone sees his brother committing a sin that does not lead to death, he should pray that God would give him life. This applies to those who commit sins that do not lead to death. There is a sin that leads to death. I am not telling you to pray about that.
King James Version
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.
Young's Literal Translation