So… one of my favorite hymns, which has one of those turn-of-the-century sounds, has its melody from an African-American spiritual. Words written in 1913 (with the 3rd stanza inserted in 1987 from Galatians 3:28 (https://www.biblegateway.com/passage/?search=gal+3%3A28&version=NRSVUE)) , according to the fine print at the bottom of the page.