9. If we accept human testimony, the testimony of God is surely greater. Now the testimony of God is this, that he has testified on behalf of his Son.
10. Whoever believes in the Son of God has this testimony within himself. Whoever does not believe God has made him a liar by not believing the testimony God has given about his Son.
11. And this is the testimony: God gave us eternal life, and this life is in his Son.
12. Whoever possesses the Son has life; whoever does not possess the Son of God does not have life.
13. I write these things to you so that you may know that you have eternal life, you who believe in the name of the Son of God.
14. And we have this confidence in him, that if 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, we know that what we have asked him for is ours.
16. If anyone sees his brother sinning, if the sin is not deadly, he should pray to God and he will give him life. This is only for those whose sin is not deadly. There is such a thing as deadly sin, about which I do not say that you should pray.
17. All wrongdoing is sin, but there is sin that is not deadly.