Mark 8:11-13 - Pharisees Demand A Sign
11 And the Pharisees came forth, and began to question him, seeking of him a sign from heaven, testing him. 12 And he sighed deeply in his spirit, and said, Why does this generation seek after a sign? verily I say unto you, There shall no sign be given unto this generation. 13 And he left them, and entering into the ship again departed to the other side.