1 The Pharisees and Sadducees came to test Jesus. So they asked him to show them a miraculous sign from heaven.
2 He responded to them, “In the evening you say that the weather will be fine because the sky is red.
3 And in the morning you say that there will be a storm today because the sky is red and overcast. You can forecast the weather by judging the appearance of the sky, but you cannot interpret the signs of the times.
4 “Evil and unfaithful people look for a miraculous sign. But the only sign they will be given is that of Jonah.”Then he left them standing there and went away.
5 The disciples had forgotten to take any bread along when they went to the other side of the Sea of Galilee.
6 Jesus said to them, “Be careful! Watch out for the yeast of the Pharisees and Sadducees!”