1 John 5:14-16
5:14 And this is the confidence that we have before him: that whenever we ask anything according to his will, he hears us.
5:15 And if we know that he hears us in regard to whatever we ask, then we know that we have the requests that we have asked from him.
5:16 If anyone sees his fellow Christian committing a sin not resulting in death, he should ask, and God will grant life to the person who commits a sin not resulting in death. There is a sin resulting in death. I do not say that he should ask about that.