Genesis 11:1

And the whole earth was of one language and of one speech.

Zephaniah 3:9

For then I will turn to the peoples of a pure language, that they may all call upon the name of LORD, to serve him with one consent.

Acts 2:6

And the sound of this that happened brought the multitude together. And it was bewildered because each one heard them speaking in his own language.

Isaiah 19:18

In that day there shall be five cities in the land of Egypt that speak the language of Canaan, and swear to LORD of hosts. One shall be called The city of destruction.

Treasury of Scripture Knowledge

Summary

And the whole earth was of one language, and of one speech.

Bible References

Was

Isaiah 19:18
In that day there shall be five cities in the land of Egypt that speak the language of Canaan, and swear to LORD of hosts. One shall be called The city of destruction.
Zephaniah 3:9
For then I will turn to the peoples of a pure language, that they may all call upon the name of LORD, to serve him with one consent.
Acts 2:6
And the sound of this that happened brought the multitude together. And it was bewildered because each one heard them speaking in his own language.