Mark 8:11-13 - Pharisees Demand A Sign
11 and the pharirisees came forth, and began to dispute with Him, desiring of Him a sign from heaven, tempting Him. 12 And He sighing deeply in his spirit, saith, Why doth this generation require a sign? Verily I tell you, There shall no sign be given to this generation. 13 So He left them, and went on board the ship again, and departed to the other side.