1 John 5:12-16 New English Translation (NET Bible)
12 The one who has the Son has this eternal life; the one who does not have the Son of God does not have this eternal life.
Assurance of Eternal Life
13 I have written these things to you who believe in the name of the Son of God so that you may know that you have eternal life.
14 And this is the confidence that we have before him: that whenever we ask anything according to his will, he hears us. 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. 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.