If one continues reading in chapter 14 verse 22 mentions tongues are for those that believe not. Then Paul goes on to say in verses 27,28 there should be one to interpret or keep silent. Paul already wrote at 1 Cor 13v8 that tongues would cease. Cease with the death of the apostles.
'Tongues' were a temporary arrangement for 1st-Century Christians.
The gathering at Pentecost was large with people speaking many different languages. The 'tongues' referred to at Acts [2v6,11 B] would be talking about people being able to understand what was being spoken about the wonderful works of God in their own 'mother tongue' or language.
In other words, the crowds could understand right away in their own language and take the message of the good news of God's kingdom back to their home and convey that message to others speaking their same language so that they understood what was learned at Jerusalem, thus help the infant first-century Christianity get off to a fast start in spreading the good news.
Acts [2vs 17,18] has the setting, not in the 1st century, but now for our day or these last days of badness on earth [2nd Tim 3vs1-5,13].
Please notice instead of tongues or instant understanding in one's own mother tongue, but rather the word 'prophecy' is now used.
Not meaning 'new prophecy' but telling others or explaining about already recorded prophecy. [Matt 24v14]. Or, as Zephaniah [3v9] says a pure language. Pure in the sense that each person if desired could understand and speak pure Biblical truth to others. Not by instant translation, but by either speaking to others of the same language, or learning another's language [mother tongue] so the good news of God's kingdom could be proclaimed world wide or on a global scale before the end times of badness on earth comes before Jesus ushers in Peace on Earth toward men of goodwill.
