https://www.mljtrust.org/sermons-online/acts-5-17-32/the-irrationality-of-unbelief/

Unbelief and rejection of the gospel flows from a heart that is fallen and corrupt. In this sermon on Acts 5:17–32, Dr. Martyn Lloyd-Jones explains this central problem that plagues all humanity. For when people say that the gospel is foolish or for the primitive, they are not doing so as free thinkers, but as sinners who reject God and His way of life. This is seen when the apostles John and Peter are put in prison by the Jewish leaders. These unbelieving Jews reject the message of the crucified and resurrected Messiah and they persecute those that believe. This is unbelief manifest in irrationality. They do not put forth arguments, but they simply reject the message and the messengers. So, when those who hear the gospel of Christ reject it with anger and hatred, it should not be surprising for the Bible predicts and explains this rejection. God’s word says that all are sinners by nature and are wholly opposed to God. As it was in the days of the Apostles, so it is also true in modern times. All around us people scoff and ridicule the message of a crucified Savior due to unbelief. And this unbelief can only be remedied by the grace of God.