What was the gospel of the kingdom that Jesus preached?

Les explains that there could be no gospel as we know it yet, because it hadn't been accomplished. The gospel of the kingdom was the good news that the King is coming, the King is here, and He is ready to set up His kingdom as it was being offered to Israel. Jesus used that backdrop—the kingdom gospel He and the twelve had preached for almost three years. This same gospel of the kingdom will be preached in all the world as a witness to all nations, and then the end will come. Many take that verse out of context, but the gospel of grace is a calling out of a people for His name, and it will end. The tribulation will come, and the same kingdom gospel Jesus preached during His three-year ministry will be proclaimed again during the tribulation. If that good news reaches every nation, the King is coming within a seven-year time frame.