Have you ever wondered why there seem to be so many people today offended by Jesus and his message? A look into Matthew 11 shows that many of the world’s population - even the greatest of religious leaders - can be offended by what Jesus came teaching and preaching, all in the face of clear evidence. But why are people sometimes so offended and refuse to believe in him? People refuse to believe because within them lies an issue at the very core of their being: their heart. In this sermon, we will answer three questions concerning the unbelief of those opposed to the Gospel: What is unbelief? How does unbelief operate? How do we overcome unbelief?