>>24124436I didn't say everyone will convert. Jesus said that true Christians will be a minority.
>>24124437Mark describes Jesus speaking of the good news or the good news of God (1:14-15). Luke shows Jesus preaching good news for the poor (4:18). And these passages also point back to verses in Isaiah proclaiming the good news of God’s victory over his enemies (52:7, 61:1).
We know that the gospel was preached during Christ’s ministry, what was initially preached was not a message about Christ’s death, his resurrection, or how he would redeem humanity from sin. At this time, the gospel was the good news that God’s kingdom was entering the world and that things would finally be set right.
After Christ’s resurrection, we find some passages in Paul’s letters that are closer to a definition of the gospel. Romans 1:16 says the gospel is “the power of God for salvation to everyone who believes.” In 1 Corinthians 15, Paul says, “I would remind you, brethren, in what terms I preached to you the gospel [or the good news], which you received, in which you stand, by which you are saved, if you hold it fast—unless you believed in vain.
Paul then describes this good news. It says Christ died for our sins, was buried, rose three days later, and appeared to numerous people, including Paul.
Notice there the gospel is the good news of God’s kingdom entering the world that saves God’s people through the life, death, and resurrection of Jesus Christ.
But these verses about the gospel never say that it is about salvation through faith alone, or grace alone, or any other doctrinal formula. The gospel is the salvation that comes through God’s power being implemented in his kingdom through his son.