“Who is he, sir?” the man asked. “Tell me so that I may believe in him.”
Up to now the man had not seen Jesus, but Jesus has just sought him out and spoken to him and he knows that voice. He knows that the One to whom he is speaking is the same One who gave him sight, and he trusts Him and wants to do what is right.
We will never know everything there is to know about Jesus, but we must act upon what we do know about Him. Knowledge brings responsibility and responsibility demands faith.