1 John 5:13
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
10He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son.
11And this is the record, that God hath given to us eternal life, and this life is in his Son.
12He that hath the Son hath life; he that hath not the Son of God hath not life.
13These 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.
14And this is the confidence that we have in him, that, if we ask any thing according to his will, he heareth us:
15And if we know that he hear us, whatsoever we ask, we know that we have the petitions that we desired of him.
16If any man see his brother sin a sin not unto death, he shall ask, and he shall give him life for them that sin not unto death. There is a sin unto death: I do not say that he shall pray for it.