It Never Changes
The beginning of the gospel of Jesus Christ, the Son of God. As it is written in Isaiah the prophet:
“BEHOLD, I SEND MY MESSENGER AHEAD OF YOU,
John the Baptist appeared in the wilderness preaching a baptism of repentance for the forgiveness of sins. — Mark 1:1-4
And Jesus came up and spoke to them, saying, “All authority has been given to Me in heaven and on earth. Go therefore and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit, teaching them to observe all that I commanded you; and lo, I am with you always, even to the end of the age.” — Matthew 28:18-20
The Gospel of Mark reveals something remarkable about “the gospel of Jesus Christ, the Son of God” in that it did not begin with the introduction of Jesus’ earthly ministry, but with John the Baptist. The ministry of John the Baptist was not something separate and self-contained which began and ended with John himself, but in fact was fully integrated with the ministry of Christ. John “came preaching…saying, ‘Repent, for the kingdom of heaven is at hand’", (Mt. 3:1-2) and Jesus took up the exact refrain, “Repent, for the kingdom of heaven is at hand” (Mt. 4:17) when He formally began to minister. John preached “a baptism of repentance for the forgiveness of sins”, and so likewise did Jesus preach the same. Building upon what began with John, Jesus’ final instructions were to “make disciples…baptizing them…teaching them to observe all I commanded you”. From the very outset of Christ’s ministry, beginning with John the Baptist until ultimately passed on to the Church through His disciples, the message and purpose of the Gospel never changed.