Jesus again refuses to give a sign

16 ^1-4 Once the Pharisees and the Sadducees arrived together to test him, and asked him to give them a sign from Heaven. But he replied, “When the evening comes you say, ‘Ah, fine weather—the sky is red.’ In the morning you say, ‘There will be a storm today, the sky is red and threatening.’ Yes, you know how to interpret the look of the sky but you have no idea how to interpret the signs of the times! A wicked and unfaithful age insists on a sign; and it will not be given any sign at all but that of the prophet Jonah.” And he turned on his heel and left them.