Mark 8:12
King James Version
“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.”
Context
9And they that had eaten were about four thousand: and he sent them away.
10And straightway he entered into a ship with his disciples, and came into the parts of Dalmanutha.
11And the Pharisees came forth, and began to question with him, seeking of him a sign from heaven, tempting him.
12And 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.
13And he left them, and entering into the ship again departed to the other side.
14Now had forgotten to take bread, neither had they in the ship with them more than one loaf.
15And he charged them, saying, Take heed, beware of the leaven of the Pharisees, and the leaven of Herod.