When 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.
When 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." So he got back into the boat and left them, and he crossed to the other side of the lake.
A tree is identified by its fruit. Figs never grow on thornbushes, nor grapes on bramble bushes. A good person produces good things from the treasury of a good heart, and an evil person produces evil things from the treasury of an evil heart. What you say flows from what is in your heart.
"My thoughts are nothing like your thoughts," says the Lord. "And my ways are far beyond anything you could imagine. For just as the heavens are higher than the earth, so my ways are higher than your ways and my thoughts higher than your thoughts."
For who would begin construction of a building without first calculating the cost to see if there is enough money to finish it? Otherwise, you might complete only the foundation before running out of money, and then everyone would laugh at you.
"Aren't the rivers of Damascus, the Abana and the Pharpar, better than any of the rivers of Israel? Why shouldn't I wash in them and be healed?" So Naaman turned and went away in a rage. But his officers tried to reason with him and said, "Sir, if the prophet had told you to do something very difficult, wouldn't you have done it? So you should certainly obey him when he says simply, 'Go and wash and be cured!'"
And now, dear brothers and sisters, one final thing. Fix your thoughts on what is true, and honorable, and right, and pure, and lovely, and admirable. Think about things that are excellent and worthy of praise.
But despite Jesus' instructions, the report of his power spread even faster, and vast crowds came to hear him preach and to be healed of their diseases. But Jesus often withdrew to the wilderness for prayer.