11 The Pharisees came and began to question Jesus. To test him, they asked him for a sign from heaven.
12 He sighed deeply and said, “Why does this generation ask for a sign? Truly I tell you, no sign will be given to it.”
13 Then he left them, got back into the boat and crossed to the other side.
14 The disciples had forgotten to bring bread, except for one loaf they had with them in the boat.
15 “Be careful,” Jesus warned them. “Watch out for the yeast of the Pharisees and that of Herod.”
16 They discussed this with one another and said, “It is because we have no bread.”
17 Aware of their discussion, Jesus asked them: “Why are you talking about having no bread? Do you still not see or understand? Are your hearts hardened?