Dr. William McKay wrote the hymn, Revive Us Again, in 1863. He was raised by a very devout mother, but he would have none of it. It wasn't until a dying man left something behind that astounded the Doctor that he realized the power of God.
Here is the link to listen to Revive Us Again.
https://www.youtube.com/watch?v=VN4N7hOMvTk
