'Languages' in the Bible

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.