Interesting. On the day of Pentecost, those who spoke in tongues (other languages) did not need an interpreter. They understand in their own language.
Paul says someone who speaks in another language must wait for someone else to interpret. If he can interpret it himself, why speak in another language in the first place? Just speak English (or Aramaic or Greek, whatever).
I've watch TBN for years, and heard people speaking tongues a lot. Never--I mean never--did anyone interpret.
Well, we interpret that different!
I see the disciples magnifying God in tongues.
Notice that they were all together in one place, then they were all filled with the Holy Spirit and they all began speaking in tongues. Since they were all speaking in foreign languages, they could not have understood each other. Therefore, they were not talking to one another, but notice that there was no-one else around at this point for them to be talking to. They were praising Him in tongues in the Holy Spirit, which is one of the primary purposes for tongues:
"If you are praising God with your spirit, how can one who finds himself among those who do not understand say "Amen" to your thanksgiving, since he does not know what you are saying?" (1 Corinthians 14:16)
On the day of Pentecost the disciples were talking to God in the Holy Spirit. They were praying in the Spirit.
The people in the crowd said, "we hear them declaring the wonders of God in our own tongues!" In other words, the disciples were praising God, telling Him of His wonders, as in Psalms 40:5 and 66:3:
"Many, O LORD my God, are the wonders you have done. The things you planned for us no one can recount to you; were I to speak and tell of them, they would be too many to declare." (Psalms 40:5)
"Say to God, "How awesome are your deeds! So great is your power that your enemies cringe before you."" (Psalms 66:3)
Why were the disciples praising God in tongues? In Cor. 14 it tells why!
Notice in Act 10 there was not an interpreter..also Acts 19. We need to learn the difference in the ministry of tongues in a congregation and what we receive by being baptized in the Holy Spirit.