mark 8:11 And the Pharisees came forth, and began to question with him, seeking of him a sign from heaven, tempting him. - Free Bible Online

      11. seeking of him a sign from heaven, tempting him--not in the least desiring evidence for their conviction, but hoping to entrap Him. The first part of the answer is given in Matthew alone (Mt 16:2, 3): "He answered and said unto them, When it is evening, ye say, It will be fair weather; for the sky is red. And in the morning, It will be foul weather to-day: for the sky is red and lowering [sullen, gloomy]. Hypocrites! ye can discern the face of the sky; but can ye not discern the signs of the times?" The same simplicity of purpose and careful observation of the symptoms of approaching events which they showed in common things would enable them to "discern the signs of the times"--or rather "seasons," to which the prophets pointed for the manifestation of the Messiah. The scepter had departed from Judah; Daniel's seventy weeks were expiring, &c.; and many other significant indications of the close of the old economy, and preparations for a freer and more comprehensive one, might have been discerned. But all was lost upon them.

JFB.