A black man who has excelled in his proffession. Who stands peerless in a competative field. Who others of his race see as an inspirational figure. The literal connotations applies to that mans ability to come through in the clutch, or distinguish himself at the highest level.
Typically used to describe Micheal Jordan. Also used in reference to Jessie Owens and Carl Lewis.
Asked who Alan Iversen idolized growing up he replied, "Yo, there's only one, son. Micheal Jordan...BlackJesus."
Boy: "I got 98% on that test about the economic revolution in southern Russia during the time of Stalin's rule, even though it was supposedly really hard and everyone was freaking out about it, especially that one girl with the really ugly hair. Christ, she's crazy."