Well, all men spoke the same language before the Tower of Babel, and Pentecost just reversed things in a show of God’s power.
The Lord can do whatever He wants with our speech.
Look at how He made it so Zechariah couldn’t talk:
The angel said to him, “I am Gabriel. I stand in the presence of God, and I have been sent to speak to you and to tell you this good news. And now you will be silent and not able to speak until the day this happens, because you did not believe my words, which will come true at their appointed time.”
GBU
I've often thought about what language we will speak in heaven. Maybe we won't need words, our voice, our languages? Whatever this "heavenly" language is, I don't think it is whatever "tongues" language is being done in Charismatic circles. THAT kind, Scripture tells us WILL cease.