Looks like you have different understanding of what "signs for unbelievers" means then.
I suspect you are forced to conclude as such, because you already begun with the axiom "There are 2 types of tongues, one of which is a heavenly language", and you consider that as unquestionable.
Since you are absolutely certain that is true, when you try to understand what Paul was trying to say in 1 Cor 14:22, even when vs 21 placed that in the context of unbelieving Israel hearing the Assyrian language, which they did not understand, you end up concluding that heavenly languages can also serve as signs to unbelievers.
I suspect you are forced to conclude as such, because you already begun with the axiom "There are 2 types of tongues, one of which is a heavenly language", and you consider that as unquestionable.
Since you are absolutely certain that is true, when you try to understand what Paul was trying to say in 1 Cor 14:22, even when vs 21 placed that in the context of unbelieving Israel hearing the Assyrian language, which they did not understand, you end up concluding that heavenly languages can also serve as signs to unbelievers.
I believe one thing. You believe something different. does that mean we both have axioms? I guess I'd better look up what the word actually means.
Love in Jesus,
Kelby