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.
Related Commentaries of 1 John 5:12
1 John 5:12
12 He that hath the Son hath life; and he that hath not the Son of God hath not life.