“He that hath the Son hath life; and he that hath not the Son of God hath not life.”
King James Version (KJV)
5:12 It plainly follows, he that hath the Son - Living and reigning in him by faith. Hath this life; he that hath not the Son of God hath not this life - Hath no part or lot therein. In the former clause, the apostle says simply, the Son; because believers know him: in the latter, the Son of God; that unbelievers may know how great a blessing they fall short of.
1Jo 5:12 He that hath the Son hath life. We lay hold of the Son by faith in him and thus come to life.