The Confession

Matthew 26:62-64 And the high priest stood up and said, “Have you no answer to make? What is it that these men testify against you?” But Jesus remained silent. And the high priest said to him, “I adjure you by the living God, tell us if you are the Christ, the Son of God.” Jesus said to him, “You have said so. But I tell you, from now on you will see the Son of Man seated at the right hand of Power and coming on the clouds of heaven.” 
During this interrogation by the High Priest, Jesus is being badgered to make a confession - to say something that will be evidence of a capital crime, worthy of death.  But Jesus didn't have to brag. He waits until someone finally gets the facts straight.  Then He comments: "You've got it! I am the Messiah!"  That is all the evidence they need, but He does not stop there. He realizes that what He means by that, and what His accusers mean by that are two different things.  Since He is the Messiah, His current situation, being bound and abused, is only temporary.  He will show His authority, at the right hand of God, and then in Judgment.  They will indeed be able to see that He is the King.