Who coined the phrase "Amen Brotha"

Question

Who coined the phrase "Amen Brotha" or "Amen Brother". Or wher did you first here it?

Answer 1

The Winstons, a funk and soul music outfit based in Washington, D.C. in  the 1960s, are most notable for recording a track called "Amen, Brother" (a B-side to the single "Color Him Father" recorded in 1969). "Amen, Brother" is probably the most sampled record of all time.