Matthew 16:1
The Demand for a Sign
16:1 Now when the Pharisees and Sadducees came to test Jesus, they asked him to show them a sign from heaven.
Matthew 16:4
16:4 A wicked and adulterous generation asks for a sign, but no sign will be given to it except the sign of Jonah.” Then he left them and went away.
Matthew 16:6
16:6 “Watch out,” Jesus said to them, “beware of the yeast of the Pharisees and Sadducees.”