Immediately on the heels of being condemned by Jesus for the blasphemy of the Spirit, the Scribes and Pharisees ask Him for a sign. This is not an unheard of request: Moses, Gideon, and "Doubting" Thomas all famously asked for - and received - confirmation before they accepted what was being told them. And yet, Jesus refuses to meet their demands. Why? Find out in this expository sermon from Matthew 12:38-50.