The verse I Cor. 14:13, even by itself, clearly implies these tongues were linguistic. By and large, this alone refutes what most (Neo-)Pentecostalists claim it teaches.
For the verse does not say: ‘Let him utter non-linguistic ecstatic sounds!’ Let him do so either publically, or privately, or both! Let him utter sounds which he himself does not understand.’ No! Instead, the verse actually says: ‘Let him who speaks in a foreign language, pray that he may be enabled to interpret it [to others]!”
Further, the verse does not say: ‘Let the ecstatic sound-utterer pray that someone else present, may interpret the utterer’s sounds.’ No! Instead, the verse actually says: ‘Let the one who speaks in a language, pray that he may be enabled to interpret it [to others]!”
