The link below will take you to a book written on the history of the Sabbath in Ethiopia dating back to 331, A.D.
This is not a video link.
africansdahistory.org/wp-content/uploads/2018/04/The-Sabbath-in-Ethiopia-by-Bekele-Heye.pdf
Born Again: Inside-Out Ministry
Being born again from the inside out physically, spiritually, and mentally