Genesis 11:1

Now the whole earth spoke one language and used the same words (vocabulary).

Zephaniah 3:9

“Then I will give to the peoples [clear and pure speech from] purified lips [which reflect their purified hearts],
That all of them may call on the name of the Lord,
To serve Him shoulder to shoulder (united).

Acts 2:6

And when this sound was heard, a crowd gathered, and they were bewildered because each one was hearing those in the upper room speaking in his own language or dialect.

Isaiah 19:18

In that day five cities in the land of Egypt will speak the language of [the Hebrews of] Canaan and swear allegiance to the Lord of hosts. One [of them] will be called the City of Destruction.

Treasury of Scripture Knowledge

Summary

Genesis 11:1

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

Was

Isaiah 19:18

Zephaniah 3:9

Acts 2:6

Bible References

Was

In that day five cities in the land of Egypt will speak the language of [the Hebrews of] Canaan and swear allegiance to the Lord of hosts. One [of them] will be called the City of Destruction.

And when this sound was heard, a crowd gathered, and they were bewildered because each one was hearing those in the upper room speaking in his own language or dialect.