'Explain' in the Bible

We don't speak about these things with words taught us by human wisdom, but with words taught by the Spirit, as we explain spiritual things to spiritual people.

Therefore let one who speaks in a tongue pray that he may [be gifted to] translate or explain [what he says].

If anyone speaks in a tongue, it should be limited to two or at the most three, and each one speaking in turn, and one must interpret [what is said].