I believe that Thou art the Christ, the Son of God.
What a tremendous confession. Martha hit the nail on the head with this one. And there has been no change. This confession is still absolutely necessary in the conversion experience. Romans 10 verse 9 tells you to confess with your mouth Jesus as Lord. God wants to hear your verbal confession that His Son, Jesus, is the Lord of your life. Then, if you believe in your heart that God has raised Him from the dead, you will be saved!