Mark 8:11-13 - Pharisees Demand A Sign
11 And the Pharisees went out and began to dispute against him, seeking from him a sign from heaven, tempting him. 12 And groaning in his spirit, he says, Why does this generation seek a sign? Verily I say unto you, A sign shall in no wise be given to this generation. 13 And he left them, and going again on board ship, went away to the other side.