Mark 8:10-13 King James Version (KJV)
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.
13 And he left them, and entering into the ship again departed to the other side.