Where would Joseph Smith have gotten the idea that Enoch made “rivers turn from their course“?

The Book of Moses mentions rivers turning from their course, such as in 6:34 which reads:

Behold my Spirit is upon you, wherefore all thy words will I justify; and the mountains shall flee before you, and the rivers shall turn from their course; and thou shalt abide in me, and I in you; therefore walk with me.

This is fulfilled in Moses 7:13:

And so great was the faith of Enoch that he led the people of God, and their enemies came to battle against them; and he spake the word of the Lord, and the earth trembled, and the mountains fled, even according to his command; and the rivers of water were turned out of their course; and the roar of the lions was heard out of the wilderness; and all nations feared greatly, so powerful was the word of Enoch, and so great was the power of the language which God had given him.

Jeffrey M. Bradshaw notes how we find no account of a river’s course turned by anyone in the Bible however we do find it in a Mandaean Enoch account:

The [Supreme] Life replied, Arise, take thy way to the source of the waters, turn it from its course … At this command Tavril [the angel speaking to Enoch] indeed turned the pure water from its course …
– J. P. Migne, Livre d’Adam, 21, p. 169

How would Joseph Smith have known about a Mandaean Enoch account? Where would he have gotten this information from?

See:

Jeffrey M. Bradshaw – KnoWhy OTL05C — Could Joseph Smith Have Drawn On Ancient Manuscripts When He Translated the Story of Enoch?

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