The Hope of all the world.
v.15-16 Aware of the Jews plot on his life, Jesus left that area. In another area he healed the sick but asked that the people not reveal who he was. Jesus, knowing that his time had not yet come, wanted to avoid further escalation of the conflict with the Jews for a time.
v.17-21 Matthew quotes Is 42:1-4 to show that Jesus is fulfilling specific OT prophecies regarding the Messiah. The Christ will bring justice and hope to the world (including the gentiles).

Read Matthew 12:15-21