First there is this from The Writer's Almanac:
George Frideric Handel completed the Messiah oratorio on this date in 1741. Librettist Charles Jennens had finished the text in July, and he handed it off to Handel with great expectations. He wrote to a friend, "I hope [Handel] will lay out his whole Genius & Skill upon it, that the Composition may excel all his former Compositions, as the Subject excels every other Subject." Handel worked at a furious pace, doing nothing else but composing from morning to night, and completed the oratorio in only 24 days. Messiah tells the story of Jesus' birth, death, and resurrection. It was originally written for the Easter season, and it debuted in Dublin at a charity concert the following April. The event attracted 700 people; to accommodate such a crowd, gentlemen were asked to leave their swords at home, and ladies were requested to remove the hoops from their skirts. The Dublin News-Letter reported that Messiah "far surpass[ed] anything of that Nature which has been performed in this or any other Kingdom." It remained one of Handel's favorite works for the rest of his life, and grew to become a beloved holiday favorite — but at Christmastime, rather than Easter. Even Mozart was reluctant to change anything about the oratorio when he supervised a new arrangement in 1789. "Handel knows better than any of us what will make an effect," Mozart said. "When he chooses, he strikes like a thunderbolt."
And, with a focus on a Tennessee and atheists, there is this article.
Finally, there is this personal postscript:
I wonder what Handel would think of the dispute in Tennessee. What do you think?