Reverend Marvin Winans

Pastor Marvin Winans wasn't exactly preaching to the choir when he confronted a member of his congregation about a donation ... because he's come under fire for his actions at his Perfecting Church's recent "Day Of Giving" event in Detroit. Here's what went down ... Winans reportedly made a…

Reverend Marvin Winans -- the guy who MC'd Whitney Houston's funeral service -- should NOT have been driving when he was carjacked last week ... because his license was suspended. In fact, Winans is a wanted man -- with an active warrant out for his arrest, this according to DetroitNews.com.…