Luke 19:41-44 — What is the greatest tragedy in this world? In this sermon on Luke 19:41–44 titled “One Mediator,” Dr. Martyn Lloyd-Jones says that it is the fact that the world is blinded and unable to believe in the gospel. This unbelief is seen all throughout the ministry of Jesus, but particularly in His final days. The same people that greet Him at His triumphal entry are the same ones who later that same week cry for Him to be crucified. These men and women heard the message of Jesus and they knew that He claimed to be the Messiah, yet in their unbelief they rejected Him. It is a sinful and corrupt heart that leads people to reject the gospel. Jesus knew this was true when He wept over the great city of Jerusalem, knowing that these people would reject Him and be judged by God in the destruction of the temple. Christians of today and all times must remember that the gospel is based on the fact of Jesus’s life, death, and resurrection. It is not just another religious theory, but it is the very word of God. It is only through this message of salvation that anyone has true peace and knowledge of God and His love.