One of the best ways to understand someone is to find out what he thinks about himself. Jesus said many, many things about who He was — He said that He is the Son of God (Matthew 16:16-17), that He and the Father are one (John 10:30), and that the Father is the One who sent Him (John 5:37).
He also announced that He did not come to be served, but to serve and that He came to give His life as a ransom for many (Matthew 20:28). He came as a substitute payment in behalf of humanity. He agreed with His accusers when they called Him "King of the Jews."