1 John 5:16-17 (New International Version)

 ¹⁶If anyone sees his brother commit a sin that does not lead to death, he should pray and God will give him life. I refer to those whose sin does not lead to death. There is a sin that leads to death. I am not saying that he should pray about that. ¹⁷All wrongdoing is sin, and there is sin that does not lead to death.