Hebrew Bible

Genesis 11:7

5 But the Lord came down to see the city and the tower that the people had started building. 6 And the Lord said, “If as one people all sharing a common language they have begun to do this, then nothing they plan to do will be beyond them. 7 Come, let’s go down and confuse their language so they won’t be able to understand each other.8 So the Lord scattered them from there across the face of the entire earth, and they stopped building the city. 9 That is why its name was called Babel—because there the Lord confused the language of the entire world, and from there the Lord scattered them across the face of the entire earth.

Date: 5th Century B.C.E. (Final composition)
* Dates are based on scholarly estimates

Pseudo Jonathan Genesis 11:9

And the Lord was revealed to punish them for the work of the city and the tower which the sons of men builded. And the Lord said, Behold, the people is one, and the language of all of them one: and this they have thought to do: and now they will not be restrained from doing whatever they imagine. And the Lord said to the seventy angels which stand before Him, Come, we will descend and will there commingle their language, that a man shall not understand the speech of his neighbour. And the Word of the Lord was revealed against the city, and with Him seventy angels, having reference to seventy nations, each having its own language, and thence the writing of its own hand: and He dispersed them from thence upon the face of all the earth into seventy languages. And one knew not what his neighbour would say: but one slew the other; and they ceased from building the city.

Date: 300-1200 C.E.
* Dates are based on scholarly estimates