In Matthew 16:1-12, Jesus confronts the Pharisees and Sadducees, exposing their obsession with signs and warning His disciples about the dangerous influence of their teaching. Despite witnessing miracles, the Pharisees demanded more proof, revealing their lack of faith—something Jesus said would only be satisfied by the ultimate “sign of Jonah,” His resurrection. This passage challenges believers to confront our unbelief and constant tendency to focus on the wrong things while we miss what God is doing right in front of us.