I've heard others express that opinion as well, but I don't know of any place in the Bible that clearly states that. There is indication from the Scriptures that there is some sort of language in heaven. I'm thinking specifically of the mention of "new names" in the book of Revelation. To me, "new names" implies a new language, and a new language suggests it's one we don't already know. There is reference to tongues in the Bible, but that's in a different context. I don't know of any passage in the Bible that says that. Have you found one? How did you come to that conclusion?