I John 5:16-18

If anyone sees his brother sinning a sin which does not lead to death, he will ask, and He will give him life for those who commit sin not leading to death. There is sin leading to death. I do not say that he should pray about that. All unrighteousness is sin, and there is sin not leading to death. We know that whoever is born of God does not sin; but he who has been born of God keeps himself, and the wicked one does not touch him.