For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life.John 3:16 NIV
The last verse has spoken of “every one who believeth.” The thought went beyond the limits that Rabbis set to the kingdom of God. Its only limit is humanity. This thought is now repeated and strengthened by the “might not perish,” and the love of God is made the foundation on which it rests. Perhaps no verse in the Bible has been so much explained as this; perhaps no verse can be so little explained. Most young preachers have sermons upon it; older men learn that its meaning must be felt and thought rather than spoken. Still less can it be written; and this Note may not attempt to do more than indicate some lines of thought which may help to lead to others.
God so loved the world.—Familiar as the words are to us, they were uttered to Nicodemus for the first time. They are the revelation of the nature of God, and the ground of our love to God and man. (Comp. Notes on 1John 4:7-11.)
His only begotten Son.—Here, once again, the Old Testament Scriptures suggest and explain the words used. Every Jew knew, and loved to think and tell of his forefather who was willing to sacrifice his own and only son in obedience to what he thought to be the will of God (Genesis 22). But Love gives, and does not require, sacrifice. God wills not that Abraham should give his son, but He gave His only begotten Son. The dread power that man has ever conceived—that is not God; the pursuing vengeance that sin has ever imagined—that is not God; the unsatisfied anger that sacrifice has ever suggested—that is not God. But all that human thought has ever gathered of tenderness, forgiveness, love, in the relation of father to only child—all this is, in the faintness of an earth-drawn picture, an approach to the true idea of God. Yes, the true idea is infinitely beyond all this; for the love for the world gives in sacrifice the love for the only begotten Son.
Believeth in.—Better, believeth upon. The preposition is not the same as in the last verse. (Comp. John 1:12.) There the thought was of the Son of Man lifted up, in whom every one who believes and can interpret spiritual truth, ever has eternal life. Here the thought is of the Son of God given for the world, and every one who believes upon, casts his whole being upon Him, and, like Abraham, in will rests all upon God, finds that God has provided Himself a lamb for a burnt-offering instead of human sacrifice or death.
Everlasting life.—Better, as the same Greek word is rendered in the previous verse, eternal life. For the meaning of this word see Note on Matthew 25:46. It is of frequent use in this Gospel (seventeen times), and always used in reference to life. Ellicott