Mark 8:11-13

11 The Pharisees came and started to argue with Jesus. Hoping to embarrass him, they asked for some heavenly sign.

12 Then his spirit was moved. He gave a deep sigh and said, “Why do the people of this present time ask for a sign? Truly, I say to you, no sign shall be given to this people.”

13 Then he left them, got into the boat again, and went to the other side of the lake.