True, but Jesus did reveal the Gospel to His disciples. If I may ask, please find and show me what Jesus said about the Gospel. I think it will clear a lot up.
Take a look at the Sermon on the Mount. In Matthew 5:48, Jesus said that the standard of righteousness is perfection.
If you have been perfect all your life; and believe that you can be perfect for the rest of your life...well, you JUST MIGHT make it into heaven on your own merits. Your righteousness must be greater than that of the scribes and Pharisees, who were sticklers for the law.
Now, in a human court, a judge does not let a criminal off the hook because he says, I repent. If he committed a crime, he must pay the penalty, and the punishment will fit the crime. And God is certainly not less just than our human judges.
Now there is a story of a judge who had a son who violated a new law that he was unaware of. It appears there was an endangered species of snail that would cross a certain road, and animal rights activists brought into being a law that said you had to watch for snails any time you crossed that road, and could not go faster than 5 miles per hour when crossing that road.
So the judge's son went over that road at the speed he normally went across it, about 30 miles an hour, not knowing about the law. The fine associated for breaking this law was about $50,000 or 20 years in jail.
So he stands before his father at the judgment seat.
And his father the judge says, as your judge, I cannot give you preference because you are my son, I must be impartial. The fine associated with this crime is $50,000 or 20 years in jail. So I am giving you the penalty of the fine of $50,000 or 20 years in jail.
His son said, "But I didn't know about this law, and I won't do it again."
The judge said, "Ignorance of the law is no excuse, and the fact is that you have committed a crime, the fact that you will not do it again doesn't nullify the penalty."
The judge and father said, "As your judge I fine you the $50,000 or 20 years in jail."
The son's heart sank. He couldn't pay the fine; his only option was to spend the next 20 years in jail.
Then the judge stepped down from his seat in the courtroom and said, "as your judge I had to justly penalize you the fine of $50,000. But as your father, I have made the decision that I will pay your fine. You are free to go."
This is what Jesus did for us when He died on the Cross. He paid the penalty for our sin, He paid it Himself, a debt He did not owe, because we owed a debt we could not pay.
Now read Luke 7:36-50. Anyone who is forgiven in this manner will love their Father in a way that they didn't before.