Believe in the Gospel
Jesus will mention the conversion of the people of Nineveh, to day in Iraq that the book of Jonah will tell us about. It was an immediate response from a pagan city to the preaching of Jonah. These people changed their lives as their discovered that they are doing wrong and the Lord speared them from destruction. "When God saw by their actions how they turned from their evil way, He repented of the evil that He had threatened to do to them; He did not carry it out"
We do not find this conversion of the people of God, on the contrary the Bible tells us how the Lord punished them many times and in many ways because of their evil doings and their idolatry.
St. Mark will tell us that the first preaching of Jesus was: "Repent, and believe in the gospel", the same word of St. John the Baptism calling the people to repent. Will they do that? The Holy Scripture tells us that they will not.
"Believe in the gospel." Of course the Gospels (of Matthew, Mark, Luke and John) were not written yet. Here the word gospel means good news. The good news of "the time of the fulfillment." The time assigned by God for the coming of the Messiah, the Christ, our Lord to save us and clan us. we need to repent so as to receive the gifts of Jesus presence in the world.
St. Paul will urge the Corinthians to act because the "the world in its present form is passing away." You may not have enough time to realize your projects of life. You may not have enough time to spend you time for many different things. Just concentrate of one important thing, which will help you for the rest of your life; Repent and believe in the gospel.
Do like the people of Nineveh, your life time is short, do it immediately, do not wait, the world that you see in its present form is passing away, it is changing more than you may think.
Do like the disciples and the first Christians they dedicated their
live to love, to serve, to care for others, to accept sacrifices and forgive
to others. Only in doing this they changed the pagan Roman Empire to a
Christian one. Yes, after 300 years of sacrifices, persecutions and doing
the works of love and forgiving.