Oh my. God bless you, Anonymous, for this. For those who missed the comment in the other thread, Anonymous says:
"It's from a local gospel music show in Knoxville, TN (think MTV for old folks). The Mulls were a radio staple across the Southeast for a long, long time. Preacher Mull passed away a few years ago, but the TV show (which is 50-ish years running) still goes on with his widow and daughter. They taped this years ago with Mrs. Mull's twin sisters Stella and Ella, and it is highly-requested every year."