Luke 3:4-6
The Service of John the Baptist
Previous prophets have called for return to the law they have broken. John does not continue with that. He calls for repentance. They must understand that they are hopelessly lost on the basis of the law. The area of his preaching is not the temple or Jerusalem. He has separated himself from the religious center. He preaches around the Jordan, the symbol of the death and the resurrection of the Christ of Whom he is the forerunner and to Whom he refers in his preaching. In his preaching he calls for repentance to receive forgiveness of sins and to be baptized. Baptism joins someone to Christ, baptism places someone on His side. There is, however, a difference between the baptism of John and Christian baptism. The baptism of John joins to a living Messiah. Christian baptism joins to a rejected and dead Christ (Rom 6:3). John baptizes in connection with repentance and forgiveness of sins. Only in this way can one be truly joined to Christ. Those who are baptized also distance themselves from the wicked people. They form a remnant that looks forward to Christ. The preaching and baptism of John are aimed at a spiritual preparation of the hearts to meet the Messiah.John’s action is foretold, not “in the book of Isaiah the prophet”, but “in the book of the words of Isaiah the prophet”. By adding “of the words” Luke emphasizes that every word of that book is inspired. It is not just about the big picture, but about every word. We see that in this quotation. This prophecy is fulfilled with the coming of the Lord Jesus. John is just a voice. He disappears completely in relation to Him Whom he announces. The quotation of Isaiah presents John as “one crying in the wilderness”. And what is John crying? He calls upon the people to make ready the way of the Lord, that is Yahweh, the Name of God as the God of the covenant with His people. The Lord Jesus is Yahweh of the Old Testament. John calls upon the people to make themselves ready to receive Yahweh, Who will come in Christ. This making ready must take place in the heart and be worked out in practice in going straight paths. To this end, he preaches the baptism of repentance for the forgiveness of sins.The coming of Christ has an extensive and far-reaching effect that is not limited to Israel. Luke, through the guidance of the Holy Spirit, speaks of “every ravine” and of “every mountain” and of “all flesh”. In Matthew, Mark and John the quotation does not go that far. But Luke, although he begins with the Jews, does not stop there. Therefore, in Lk 3:5-6 the Holy Spirit adds special expressions of expansiveness and comprehensiveness. He Who comes is none less than God revealed in the flesh. Therefore, the salvation that comes through Him is not limited to Israel, but comes to “all flesh”. This grace for all people is the special subject of Luke.
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