6This is he that came by water and blood, even Jesus Christ; not by water only, but by water and blood. And it is the Spirit that bears witness, because the Spirit is truth.
10He that believes on the Son of God has the witness in himself: he that believes not God has made him a liar; because he believes not the record that God gave of his Son.
13These things have I written unto you that believe on the name of the Son of God; that all of you may know that all of you have eternal life, and that all of you may believe on the name of the Son of God.
16If any man see his brother sin a sin which is 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.
20And we know that the Son of God has come, and has given us an understanding, that we may know him that is true, and we are in him that is true, even in his Son Jesus Christ. This is the true God, and eternal life.