Abbie I just learned from reading the credits at the bottom of the link I posted that Mark Lowry wrote the lyrics and Buddy Green wrote the music of Mary, Did You Know.

No wonder they perform it so well! You were so fortunate to hear them in person! Mr.Alffe got me all the Gaithier Classic Gospel CD's...and of course I watche them on PBS every Sat. night but I honestly didn't realize they wrote it!!