Would you believe I found these lyrics in the Cardozo Law Review in an article called "Lilies of the Field: A Critique of Adjudication"?

This article from the UMass Campus Chronicle, credits the song "Amen" to black actor Jester Hairston, who also dubbed Sidney Poitier's voice in "Lilies of the Field."

AMEN
(Jester Hairston)

A-a-a-men a-a-a-men a-a-a-men, amen, amen
A-a-a-men a-a-a-men a-a-a-men, amen, amen
Sing it over!
A-a-a-men a-a-a-men a-a-a-men, amen, amen
A-a-a-men a-a-a-men a-a-a-men, amen, amen
See the baby,
Wrapped in the manger,
On Christmas morning.
A-a-a-men a-a-a-men a-a-a-men, amen, amen
A-a-a-men a-a-a-men a-a-a-men, amen, amen
See him in the temple,
Talking with the elders,
Who marveled at his wisdom.
A-a-a-men a-a-a-men a-a-a-men, amen, amen
A-a-a-men a-a-a-men a-a-a-men, amen, amen
Down at the Jordan,
Where John was baptizing
And saving all sinners.
A-a-a-men a-a-a-men a-a-a-men, amen, amen
A-a-a-men a-a-a-men a-a-a-men, amen, amen
See him at the seaside,
Talking with the fishermen
And making them disciples.
A-a-a-men a-a-a-men a-a-a-men, amen, amen
A-a-a-men a-a-a-men a-a-a-men, amen, amen
Marching in Jerusalem,
Over palm branches,
In pomp and splendor.
A-a-a-men a-a-a-men a-a-a-men, amen, amen
A-a-a-men a-a-a-men a-a-a-men, amen, amen
See him in the garden,
Praying to his Father,
In deepest sorrow.
A-a-a-men a-a-a-men a-a-a-men, amen, amen
A-a-a-men a-a-a-men a-a-a-men, amen, amen
Led before Pilate,
Then they crucified him,
But he rose on Easter.
A-a-a-men a-a-a-men a-a-a-men, amen, amen
A-a-a-men a-a-a-men a-a-a-men, amen, amen
Hallelujah!
He died to save us!
And he lived forever!
A-a-a-men a-a-a-men a-a-a-men, amen, amen
A-a-a-men a-a-a-men a-a-a-men, amen, amen
Hallelujah!
He died to save us!
And he lived forever!