Mark 8:10-13

10he got into the boat with his disciples and went to the region of Dalmanutha. 11The Pharisees came and began to question Jesus. To test him, they asked him for a sign from heaven. 12He sighed deeply and said, “Why does this generation ask for a sign? Truly I tell you, no sign will be given to it.”

13Then he left them, got back into the boat and crossed to the other side.