Matthew 16:1

(Chapter XVI—Verse 1 and following) And the Pharisees and Sadducees came to him and tested him, asking him to show them a sign from heaven. But he answered and said to them: When it is evening, you say, 'It will be fair weather, for the sky is red'; and in the morning, 'It will be stormy today, for the sky is red and threatening.' You know how to discern the appearance of the sky, but you cannot discern the signs of the times. An evil and adulterous generation seeks for a sign, but no sign will be given to it except the sign of Jonah the prophet. This is not found in most codices: it is clear that from the arrangement and stability of the elements, both fair and rainy days can be predicted. However, the scribes and Pharisees, who seemed to be experts in the law, could not understand the advent of the Savior from the prophecy of the prophets.

"And the Pharisees and Sadducees came and desired Him to show them a sign from Heaven. But He saith, When it is evening, ye say, Fair weather, for the sky is red; and in the morning, Foul weather today, for the sky is red and lowering. Ye can discern the face of the sky, but can ye not the signs of the times? A wicked and adulterous generation seeketh after a sign, and there shall no sign be given unto it, but the sign of the prophet Jonas. And He left them, and departed." But Mark saith, that when they were come unto Him, and were questioning with Him, "He sighed deeply in His spirit, and saith, Why doth this generation seek after a sign?" And yet surely their inquiry was deserving of anger and great displeasure; yet nevertheless the benevolent and provident One is not angry, but pities and bewails them as incurably diseased, and after so full a demonstration of His power, tempting Him. For not in order to believe did they seek, but to lay hold of Him. Since had they come unto Him as ready to believe, He would have given it. For He who said to the woman, "It is not meet," and afterwards gave, much more would He have shown His bounty to these. But since they did not seek to believe, therefore He also calls them hypocrites, because in another place they said one thing, and meant another. Yea, had they believed, they would not even have asked. And from another thing too it is evident that they believed not; that when reproved and exposed, they abode not with Him, nor said, "We are ignorant and seek to learn." But for what sign from Heaven were they asking? Either that He should stay the sun, or curb the moon, or bring down thunderbolts, or work a change in the air, or some other such thing. What then saith He to all this? "Ye can discern the face of the sky, but can ye not discern the signs of the times?" See His meekness and moderation. For not even as before did He refuse merely, and say, "There shall none be given them," but He states also the cause why He gives it not, even though they were not asking for information. What then was the cause? "Much as in the sky," saith He, "one thing is a sign of a storm, another of fair weather, and no one when he saw the sign of foul weather would seek for a calm, neither in calm and fair weather for a storm; so should you reckon with regard to me also. For this present time of my coming, is different from that which…