It ends up that The Kingdom Heirs essentially acted as a "house band" for Silver Dollar City in Pigeon Forge, and stayed on when it became Dollywood. The group has had a numerous rotation in its membership, but still focuses on singing gospel songs at Dollywood and a limited touring schedule.
Back to the message: I love the simplistic message of this song. We can sometimes get wrapped up in getting complex. When in doubt, just preach Jesus; the rest of the gospel will follow.