John 3:36

He that believeth on the Son hath everlasting life; and he that believeth not the Son shall not see life, but the wrath of God abideth on him.

The conclusion which John draws from the facts as stated by him is simple: Jesus must grow; that is a necessity connected with His work. And in the same proportion John must become less and smaller. John, the friend of the Bridegroom, points to Jesus, and urges all sinners to cling to Him alone. This is the motto of all true servants of the Lord. They see the fulfillment of all their hopes and expectations in the fact that the people in the congregations do not cling to the pastor's person, but accept the Word that is preached to them and put their trust in that alone.

So far as the content of the statement is concerned, it makes no difference whether the last words of the Chapter are spoken by John the Baptist or written by John the Evangelist. Jesus, who is characterized by the fact that He came down from above, from heaven, stands not only over John the Baptist, but is superior to all. He is above everything, omnipotent; everything is put into His power, under His feet. John and all earth-born preachers, in spite of their high calling, are still only of the earth, can only speak in the humility of earthly ability. What John preached and testified, though a testimony of Christ and heavenly truth, yet was something which he had not gotten out of himself, but by revelation of God. But Christ's origin must be referred to a higher, to a unique source. Though found in the likeness of a mere man, yet He is come down from above; He has a supernatural, a divine origin, as a result of which His supremacy is universal. And what Jesus speaks He does not declare as the mouthpiece of someone else, but as heavenly truth out of His own essence. His testimony is concerning things which He has seen and heard from eternity, which He knows to be true as the counsel of God for the salvation of men. But in spite of this fact the testimony of Christ shares the fate of Gospel-preaching in general. So universal is the disregard of His testimony that till now practically no one wants to accept it; a relative statement. But the fact that anyone receives the message of Jesus is to such a one a seal, and causes him to confirm with absolute certainty that God is Truth. The inherent power of God in the Word has a strength of conviction above and beyond any mere human persuasion. He that receives the testimony of Jesus thereby believes in God. And for this he has good reasons, for that Christ whom God has sent speaks the very words of God; the fact of His speaking in itself contains the assurance that God's words are being spoken. For God has not given the Spirit to Jesus only in a measure, but He has poured out upon Him the fullness of His Spirit, Psalms 45:7. The Spirit of God, which lives in Christ, speaks out of Him, and therefore there is no measure, no limit to the heavenly wisdom which issues forth from His mouth. And the love of the Father for the Son has prompted Him to give Him not only the Spirit, but to commit all things into His hand. There is a measureless communication of all the fullness of divine power and authority from the Father to the Son. We have here a glimpse into the secret of the Trinity. The Father from eternity gives to the Son His Spirit, and the Son receives all things from His Father in His human nature, also the Spirit. And therefore the Spirit is that of the Son as well as that of the Father; He proceeds from both the Father and the Son. And thus, by the working of the Triune God, faith is given, by which, in turn, eternal life is a definite possession and in no wise doubtful. It is faith in the Son that assures eternal life. By faith in the Son every believer appropriates to himself all the gifts and possessions of the Son. But he that refuses to believe the Son, that will not accept the Gospel-message for his salvation, will not see the life which is earned and prepared also for him, will not become a partaker of that life in any form. He will remain in spiritual death, and the wrath of God, which is upon all the children of unbelief, will continue upon him. To be under the wrath of God without ceasing, that is the death which will plunge all unbelievers into eternal damnation on the Day of Judgment. That is the curse which unbelief brings upon itself.

Summary. Jesus preaches the doctrine of regeneration by the water and the Spirit to Nicodemus, teaches His disciples, and has them baptize, and thus gives John the opportunity for a last great testimony concerning His mission.