Conversion means 'a new king must reign'

“It is not conversion to think that you will turn, or to promise that you will turn, or resolve that you will turn, but actually and in very deed to turn, because the Word has had a true entrance into your heart. You must not be content with a reformation; there must be a revolution: old thrones must fall, and a new king must reign. Is it so with you?”

- Charles Spurgeon