Matthew 16:1-4

11The 2Pharisees and Sadducees came up, and putting Jesus to the test, they 3asked Him to show them a 4sign from heaven. 2But He replied to them, “56When it is evening, you say, ‘It will be fair weather, for the sky is red.’ 3And in the morning, ‘There will be a storm today, for the sky is red and threatening.’ 7You know how to discern the 8appearance of the sky, but are you unable to discern the signs of the times? 49An evil and adulterous generation wants a 10sign; and so a 11sign will not be given to it, except the sign of Jonah.” And He left them and went away.