Mark 8:10-13

10Immediately after this, he got into a boat with his disciples and crossed over to the region of Dalmanutha.

11When the Pharisees heard that Jesus had arrived, they came and started to argue with him. Testing him, they demanded that he show them a miraculous sign from heaven to prove his authority.

12When he heard this, he sighed deeply in his spirit and said, “Why do these people keep demanding a miraculous sign? I tell you the truth, I will not give this generation any such sign.”

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