In Matthew 15 Jesus walks around the Sea of Galilee and then goes up a mountain to sit. But many people have been following him and they bring to Jesus those who were lame, blind, crippled, mute, and many more. Although it seems Jesus is looking for rest, he heals them. Then seeing that these people were hungry, having followed him for three days, Jesus performs another miracle feeding thousands with just a handful of bread and fish.
Surely these were miraculous signs. Yet in Matthew 16 the Pharisees and Sadducees go to Jesus and test him asking for Jesus to show them a sign from heaven. Jesus doesn’t seem to have problem performing great works among the people as he goes about his public ministry. But there is purpose behind his actions. Jesus isn’t in the habit of performing party tricks. He heals people who are sick and miraculously feed those who are hungry. Jesus’ power is displayed with purpose and when the religious rulers want to test him and have him do something for their own purposes, Jesus won’t go along with it. He instead tells them that they only sign that they will see is the sign of Jonah. They want a sign of power from heaven, but they will see a surprised when what they see is Jesus dying on the cross and then three days later showing true power over death itself.
In the gospels Jesus is not aimless. He doesn’t drift about seeing which way the wind will take him. He has a mission with clear objectives and appeasing the religious elites is not a part of it. Jesus cares more for those on the outside and actually warns his own about the damaging influence of the Pharisees and Sadducees.