Mark 8:11-13; Luke 12:54-56

11 The P'rushim came and began arguing with him; they wanted him to give them a sign from Heaven, because they were out to trap him.

12 With a sigh that came straight from his heart, he said, "Why does this generation want a sign? Yes! I tell you, no sign will be given to this generation!"

13 With that, he left them, got into the boat again and went off to the other side of the lake.

54 Then to the crowds Yeshua said, "When you see a cloud-bank rising in the west, at once you say that a rainstorm is coming;

55 and when the wind is from the south, you say there will be a heat wave, and there is.

56 Hypocrites! You know how to interpret the appearance of the earth and the sky -- how is it that you don't know how to interpret this present time?