hey guys - esp byzcath - here’s a selection from 1 Cor 14 -
2 For one who speaks in a tongue does not speak to men but to God; for no one understands, but in his spirit he speaks mysteries.
3 But one who prophesies speaks to men for edification and exhortation and consolation.
4 One who speaks in a tongue edifies himself; but one who prophesies edifies the church.
i think we see, when we compare this verse with the ones about tongues from acts, that there are two different, but related phenomena going on here.
the first is the supernatural ability to speak in languages you don’t know in order to spread a message. it happened at pentecost, and it can (and perhaps does) happen today, as well.
the second is a prayer language, in which the person speaking seems to manifest the ‘groans of the Spirit’ which we don’t understand. these sound MAY be another language (i’ve heard of tongues being interpreted, not by someone with a gift of interpretation, but simply someone who spoke the language being spoken in tongues) that people today speak, it may be an archaic language, or it may be a language that we don’t know. but from the passage here in 1 Cor, i think we see the validity of ‘praying in tongues’ for personal edification.
i’ve personally never spoken in tongues, or prayed in them. i think it would be interesting to do so, but God chooses when to bestow His gifts.