Joh 3:16 For God so loved the world, as to give his only begotten Son: that whosoever believeth in him may not perish, but may have life everlasting.
Some commentators, following Erasmus, hold that what follows to the end of verse 21, is not the language of Christ, but a comment of the Evangelist; but more probably Christ still continues. The boundless love of God for the world, and not merely for the elect, is declared to be the cause of the incarnation, and the world s salvation its object. It was this love that made God give His only-begotten Son to suffer for men and save them.
Joh 3:17 For God sent not his Son into the world, to judge the world: but that the world may be saved by him.
For it was to save, not to judge the world, that the Son of God came at His first coming. Hereafter in His second coming He will come to judge and to condemn (the context proves there is question of the judgment of condemnation).
Joh 3:18 He that believeth in him is not judged. But he that doth not believe is already judged: because he believeth not in the name of the only begotten Son of God.
He who believeth in Christ escapes the judgment of condemnation; but he who oelieveth not is already condemned, because, inasmuch as he has not believed, “the wrath of God,” i.e. , original sin (Eph 2:3) and its effects in actual sin, remain upon him (verse 36); and he has rejected the only means whereby he .could be delivered from them. It is as if a physician were sent to the sick, says St. Augustine, they who come to him are cured; they who come not, perish; not through him, how ever, but because of their disease.