In preparation for heading to Jerusalem and the cross, Jesus had just asked his disciples “who do you say I am?” and they responded, through their spokesman Peter, “You are the Christ, the Son of the living God.” Then Jesus revealed that he was going to suffer and die in Jerusalem, and suddenly they had questions, doubts perhaps. They’d made the great confession (son of God), but did they believe it with every ounce of their being? Later, in Matthew 28:18-20, Jesus would give authority to carry on his work, but where did he get it? 
Scripture:  Matthew 7:1-13