Readers of this thread may also be interested in the comments on this Mudcat thread, particularly this post that I wrote:

Lyr Req: God Specializes (Have you any rivers}

In that post, I point out some ways in which the rendition of that song by Pastor E. Dewey Smith Jr. and the choir & congregation {in two YouTube videos whose hyperlinks are provided} could be considered one "textbook" example of African American gospel singing and choir/congregation "behavior".