Matthew 16:2-4

16:2 He said, “When evening comes you say, ‘It will be fair weather, because the sky is red,’ 16:3 and in the morning, ‘It will be stormy today, because the sky is red and darkening.’ You know how to judge correctly the appearance of the sky, but you cannot evaluate the signs of the times. 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.