1 John 5:13 in the King James Version
These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye may believe on the name of the Son of God.
Context
12 He who has the Son has the life. He who doesn’t have God’s Son doesn’t have the life.
13 These things I have written to you who believe in the name of the Son of God, that you may know that you have eternal life, and that you may continue to believe in the name of the Son of God.
14 This is the boldness which we have toward him, that if we ask anything according to his will, he listens to us.