According to QQ music query, I am a tiny person, and the original singer is Glass Sea Music Department. I am a mean person. The lyrics come from the song "The Communicator of the Cross". Released on 20 17-03-05. The lyrics are Ezra and the composer is Ezra.
Part of the lyrics: I am the chief culprit among tiny sinners. Even so, the Lord called me. I earnestly hope that I will no longer feel ashamed and boldly proclaim the cross of the Lord.