Scripture says nothing about a two-way conversation empowered by the Holy Spirit in Acts 2. You're going above what is written.
If they "heard" each other
and all "spoke" in a different language, the word of God spoken worked in both .
All of them were filled with the Holy Spirit and began to
speak in other tongues
as the Spirit enabled them. Now there were staying in Jerusalem God-fearing Jews from
every nation under heaven.When they heard this sound, a crowd came together in bewilderment, because each one
heard their "own language" being
spoken.Acts 2:4-6
If then I do not grasp the meaning of what someone is
saying, I am a foreigner to the "speaker", and the "speaker" is a foreigner to me. So it is with you. Since you are eager for gifts of the Spirit, try to excel in those that build up the church. 1 Corinthians 14-11-12
You write this and yet claim that the one who speaks in tongues is engaging in sinful self-edification. You're inconsistent.
The one speaking the word of God, prophecy edifies God the speaker. Not Balaam's Ass the one he put his words in its mouth. God is not served by the private interpretations of men as the things of men. We are warned about the things of men and how it makes the word of God without effect.
Your understanding of "private interpretations" is not based on Scripture and is therefore irrelevant.
Sure all of scripture or prophecy is of God's interpretation .He warns us of those who say we need a man to teach us. The MO of the antichrists.
2 Peter 1:19-21 King James Version (KJV) We have also a more sure word of prophecy; whereunto ye do well that ye take heed, as unto a light that shineth in a dark place, until the day dawn, and the day star arise in your hearts:
Knowing this first, that
no prophecy of the scripture is of "any private interpretation".For the prophecy came not in old time by the
will of man: but holy men of God spake as they were
moved by the Holy Ghost.
Scripture says nothing about Amharic, or that Philip understood it. You're going above what is written.
Scripture says nothing about Cornelius speaking in Italian. You're going above what is written.
It does not say that verbatim but there is more support to believe that then believing men spoke into the air and needed someone to interpret sounds that have no meaning to confirm something
Offering the gospel is having a conversation with God. If then I do not grasp the meaning of what someone is saying,
I am a foreigner to the speaker,
and the speaker
is a foreigner to me.