From a Sumerian tablet circa 3,000 BCE:

Once upon a time there was no snake, there was no scorpion,
There was no hyena, there was no lion,
There was no wild dog, no wolf,
There was no fear, no terror,
Man had no rival.

In those days, the lands of Subur and Hamazi,
Harmony-tongued Sumer, the great land of the decrees of princeship,
Uri, the land having all that is appropriate,
The land Martu, resting in security,
The whole universe, the people in unison
To Enlil in one tongue spoke.

Then Enki, the lord of abundance whose commands are trustworthy,
The lord of wisdom, who understands the land,
The leader of the gods,
Endowed with wisdom, the lord of Eridu
Changed the speech in their mouths, brought contention into it,
Into the speech of man that until then had been one.

(translation from “The Babel of Tongues: A Sumerian Version” by Kramer, S.N., Journal of the American Oriental Society 88:108-11,1968)