(15) The time is fulfilled.--The words are not found in the parallel passages of the other Gospels, and are interesting as embodying the same thought as St. Paul's "in the fulness of time" (Galatians 4:4; Ephesians 1:10). So, too, St. Mark adds "believe the gospel" to the simple "repent" of St. Matthew, and gives "the kingdom of God" instead of "the kingdom of heaven."

Verse 15. - The time is fulfilled; that is, the time for the coming of Messiah and of his kingdom. The kingdom which had been shut for so many ages was now to be reopened by the preaching and the death of Christ. The time is very accurately indicated. St. Matthew tells us (Matthew 4:12) that "when Jesus had heard that John was cast into prison, he departed into Galilee;" and then presently afterwards he adds, "From that time Jesus began to preach and to say, Repent, for the kingdom of God is at hand." The time and place are also accurately specified by St. Peter (Acts 10:36, 37), where he tells Cornelius that "the word of peace, preached by Jesus Christ, was published throughout all Judaea, and began from Galilee, after the baptism which John preached." It was necessary that these circumstances should be carefully detailed, because they were among the proofs of the Messiahship of Jesus. Elias must come first; and he had come in the person of the Baptist, although the prophecy probably awaits its full accomplishment in the actual reappearance of the great prophet of Israel before the second coming of our Lord. Repent ye, and believe the gospel. These words may be regarded as a summary of the method of salvation. Repentance and faith are the conditions of admission into the Christian covenant. Repentance has a special reference to God the Father, and faith, to Jesus Christ the eternal Son. It is in the gospel that Christ is revealed to us as a Saviour; and therefore we find Jesus Christ, as the object of our faith, distinguished from the Father as the object of our repentance. Repentance of itself is not sufficient - it makes no satisfaction for the Law which we have broken; and hence, over and above repentance, there is required from us faith in the Gospel, wherein Christ is revealed to us as a propitiation for sin, and as the only way of reconciliation with the Father. Without faith repentance becomes despair, and without repentance faith becomes only presumption. Join the two together, and the faithful soul is borne onwards, like a well-balanced vessel, to the haven where it would be.

1:14-22 Jesus began to preach in Galilee, after that John was put in prison. If some be laid aside, others shall be raised up, to carry on the same work. Observe the great truths Christ preached. By repentance we give glory to our Creator whom we have offended; by faith we give glory to our Redeemer who came to save us from our sins. Christ has joined these two together, and let no man think to put them asunder. Christ puts honour upon those who, though mean in this world, are diligent in their business and kind to one another. Industry and unity are good and pleasant, and the Lord Jesus commands a blessing on them. Those whom Christ calls, must leave all to follow him; and by his grace he makes them willing to do so. Not that we must needs go out of the world, but we must sit loose to the world; forsake every thing that is against our duty to Christ, and that cannot be kept without hurt to our souls. Jesus strictly kept the sabbath day, by applying himself unto, and abounding in the sabbath work, in order to which the sabbath rest was appointed. There is much in the doctrine of Christ that is astonishing; and the more we hear it, the more cause we see to admire it.And saying, the time is fulfilled,.... Either that which was fixed for the end of the law and prophets, the legal and Mosaic dispensation, and the Jewish church state; or the fulness of time for the Messiah's appearance in the world; which was agreed upon between the Father and the Son, was predicted in various prophecies, and the people of the Jews were in a general expectation of:

and the kingdom of God is at hand: the same with the kingdom of heaven, in Matthew 3:2, see the notes: See Gill on Matthew 3:2, Matthew 4:17.

repent ye, and believe the Gospel. He called them to repent, not only of their former sins and vicious course of life, but of their bad principles and tenets, concerning a temporal kingdom of the Messiah; concerning merit and free will, justification by the works of the law, and salvation by their obedience to the ceremonies of it, and the traditions of the elders: these he exhorts them to change their sentiments about, and to relinquish them, and give into the Gospel scheme; which proclaims liberty from the law, peace, pardon, and righteousness by Christ, and salvation and eternal life by the free grace of God.