Matthew 16:3-4

3And in the morning, It will be foul weather to day: for the sky is red and threatening. O ye hypocrites, ye can discern the face of the sky; but can ye not discern the signs of the times? 4A wicked and adulterous generation seeketh for a sign; and there shall no sign be given to it, but the sign of the prophet Jonah. And he left them, and departed.