Joe Glazer the preacher and the slave pie in the sky

Long haired preachers come out every night
try to tell you what´s wrong and what´s right
but when asked about something to eat
they will answer with voices so sweet
You will eat, you will eat, by and by
in the glorious land in the sky way up high
work and pray, live on hay
you´ll get pie in the sky when you die.