1 John 5:10–12 (DARBY)

10  He that believes on the Son of God has the witness in himself; he that does not believe God has made him a liar, because he has not believed in the witness which God has witnessed concerning his Son. 11  And this is the witness, that God has given to us eternal life; and this life is in his Son. 12  He that has the Son has life: he that has not the Son of God has not life.