Jonah 3:2,4,5 "“Go to the great city of Nineveh and proclaim to it the message I give you.” Jonah began by going a day’s journey into the city, proclaiming, “Forty more days and Nineveh will be overthrown.” The Ninevites believed God. A fast was proclaimed, and all of them, from the greatest to the least, put on sackcloth."
So Jonah goes and begins to preach and His message is very simple. "Forty more days and Nineveh will be overthrown" (v. 4). That's it. That was his whole message. It's eight words in English; only 4 words in Hebrew. To be honest, I've never preached an eight-word message in my life.
And it’s a pretty depressing message if you ask me. None of this "Nineveh, God loves you…" or "Nineveh for Jesus" or "Say Yes Nineveh." It’s a message of impending judgment and nothing more.
God says to Jonah – PREACH MY MESSAGE; simple, urgent, to the point. These days the message of salvation across the world so often removes a key word –"REPENT!"  Whenever Jesus - or any of the saints preached – it started with the word – REPENT!
This is a critical point. We MUST understand that we MUST preach HIS MESSAGE! And His Message begins with the word – REPENT!
It’s not the way we would do it. If we were going to put together a "Nineveh for Jesus" campaign, we would hire an advance team, buy billboards, do a social media blitz, start a Facebook page, get our Twitter team going, buy some TV time, recruit the counselors, print the follow-up materials, and organize Operation Nineveh. Nah, Jonah skipped all of that. He just went to Nineveh looking half dead and gave his entirely negative 8-word sermon. And the people repented!
Jonah was a "dead man." When God does that to you and me we won't have to say much either, "Repent, and believe the gospel"… 5 words will probably do it! But the message will almost certainly begin with the word — "Repent"!