He answered and said unto them,
When it is evening, you say, It will be fair weather: for the sky is red.
Read Chapter 16
Jerome
AD 420
This is not found in many codices. The meaning is clear from the order and harmony of the elements. Both fair and rainy days can be forecast. But the scribes and Pharisees, who were viewed as doctors of the law, could not discern the coming of the Savior from what the prophets had predicted. .
But for what sign from Heaven were they asking? Either that He should say the sun, or curb the moon, or bring down thunderbolts, or work a change in the air, or some other such thing.