1 John 5:9

5:9 If we accept the testimony of men, the testimony of God is greater, because this is the testimony of God that he has testified concerning his Son.

1 John 5:11-12

5:11 And this is the testimony: God has given us eternal life, and this life is in his Son. 5:12 The one who has the Son has this eternal life; the one who does not have the Son of God does not have this eternal life.