Matthew 16:1-4 Mt. 16:1-4
1 The Pharisees also with the Sadducees came, and tempting desired him that he would shew them a sign from heaven. 2 He answered and said unto them, When it is evening, ye say, It will be fair weather: for the sky is red. 3 And in the morning, It will be foul weather to day: for the sky is red and lowring. O ye hypocrites, ye can discern the face of the sky; but can ye not discern the signs of the times? 4 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.
Mark 8:10-12 Mk. 8:10-12
10 And straightway he entered into a ship with his disciples, and came into the parts of Dalmanutha. 11 And the Pharisees came forth, and began to question with him, seeking of him a sign from heaven, tempting him. 12 And he sighed deeply in his spirit, and saith, Why doth this generation seek after a sign? verily I say unto you, There shall no sign be given unto this generation.
(Parallel)