Here's the version from Randolph, which is a bit different.

662
LITTLE MOSES

Sung by Mr. Arlie Freeman, Natural Dam, Ark., Dec. 10, 1941.

Away the river so clear
The ladies were winding their way,
And Pharaoh's little daughter stepped down in the water
To bathe in the cool of the day.

Before it was dark she opened the ark
And found the sweet infant was there,
Before it was dark she opened the ark
And found the sweet infant was there.

Away by the waters so blue
The infant was lonely and sad,
She took him in pity and thought he was so pretty
And it made little Moses so glad.

She called him her own, her beautiful son,
And sent for a nurse that was near,
She called him her own, her beautiful son,
And sent for a nurse that was near.

Away by the river so clear
They carried the beautiful child
To his own tender mother, his sister and brother,
Little Moses looked happy and smiled.

His mother so good done all that she could
To raise him and teach him with care,
His mother so good done all that she could
To raise him and teach him with care.

And away by the sea that was red,
Little Moses, the servant of God,
While he was confided the sea was divided
As upward he lifted his rod.

The Jews stepped across while Pharaoh's folks
Was drownded in the waters and lost,
The Jews stepped across while Pharaoh's folks
Was drownded in the waters and lost.

Away on the mountain so high,
The last one that ever might be,
While he was victorious his hopes was so glorious
He stood o'er Jordan and preached.

When his labors did cease, he departed in peace,
And rested in the heavens above,
When his labors did cease, he departed in peace,
And rested in the heavens above.

from Ozark Folksongs, collected and edited by Vance Randolph (University of Missouri Press, 1980), Volume IV, pp 97-98, without tune