1 John 5:13-18

I write these things to you who believe in the name of the Son of God so that you may know that you have eternal life. This is the confidence we have in approaching God: that if we ask anything according to his will, he hears us. And if we know that he hears us—whatever we ask—we know that we have what we asked of him.
If you see any brother or sister commit a sin that does not lead to death, you should pray and God will give them 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 you should pray about that. All wrongdoing is sin, and there is sin that does not lead to death.
We know that anyone born of God does not continue to sin; the One who was born of God keeps them safe, and the evil one cannot harm them.