“Let Your Light Shine Out” was recorded by the Mullins Family, a singing family from Dickenson County, Virginia, who drew on Brethren and Freewill Baptist church traditions. Their version dates to the mid-1960s.
The song is a gospel call to witness. Drawing on the scriptural image of a light not to be hidden, it urges the believer to let that light shine out for all to see — to carry faith openly into the world.
The song passed into bluegrass gospel.