'Languages' in the Bible

These signs will accompany those who have believed: in My name they will cast out demons, they will speak in new tongues;

And they were all filled [that is, diffused throughout their being] with the Holy Spirit and began to speak in other tongues (different languages), as the Spirit was giving them the ability to speak out [clearly and appropriately].

For they heard them talking in [unknown] tongues (languages) and exalting and magnifying and praising God. Then Peter said,

And when Paul laid his hands on them, the Holy Spirit came on them, and they began speaking in [unknown] tongues (languages) and prophesying.

I thank God that I speak in [unknown] tongues more than all of you;

It is written in the Law, “By men of strange tongues and by the lips of foreigners I will speak to this people, and not even then will they listen to Me,” says the Lord.

After these things I looked, and this is what I saw: a vast multitude which no one could count, [gathered] from every nation and from all the tribes and peoples and languages [of the earth], standing before the throne and before the Lamb (Christ), dressed in white robes, with palm branches in their hands;

Then they said to me, “You must prophesy again concerning many peoples and nations and languages and kings.”

Those from the peoples and tribes and languages and nations look at their dead bodies for three and a half days, and will not allow their dead bodies to be laid in a tomb.

Then the angel said to me, “The waters which you saw, where the prostitute is seated, are peoples and multitudes and nations and languages.