Yes. In the first chapter of the Book of Job, Satan (literally, "the accuser") is a servant of God and present in the Divine court.
The I know song
like anybody knows.
Only an idiot would think of some thing like that to say, shun you.
I'll take a stab at it: This seems to mean that it is a high order of knowledge to have a sense of the limits of one's knowledge. Being 'smart' and 'informed' or 'savvy' is great, but being aware of...