If a person is speaking in an unknown language, a language he does not understand, how does that person know he is not cursing God and blaspheming Christ? After all he does not understand what he is saying!
Even if, your were correct brother, Paul tells is in Romans 8:26 and Eph. 6:18 that God knows, through the groaning of the Holy Spirit what we are saying, and interprets for us to the Father! Your question that asks how "that person knows he is not cursing God and blaspheming Christ?"
is not fair, nor
is it Christian. Like you said in another comment, "God is not stupid. He speaks English," and for what you may not know, He speaks every other language know to mankind, which would be tongues uttered in prayer!
Again, I trust in what Paul said in Romans 8:26 - "And likewise also the Spirit helps our weakness; for we know not how to pray as we ought, but the Spirit itself makes entreaty for us with
groanings which cannot be
uttered." Jubilee Bible 2000
"At the same time the Spirit also helps us in our weakness, because we don't know how to pray for what we need. But the Spirit intercedes along
with our groans that cannot be expressed in words." from GOD'S WORD Translation
Eph. 6:18 tells us to, "Pray in the Spirit at all times, with every kind of prayer and petition. To this end, stay alert with all perseverance in your prayers for all the saints."
Moving forward - Paul tells us clearly in 1 Cor. 14:5,
"I wish that all of you could speak in tongues, but I would rather have you prophesy. He who prophesies is greater than one who speaks in tongues, unless he interprets, so that the church may be edified."
Finally, I agree with Paul when he tells the church as follows, "You may be giving thanks well enough, but the other one is not edified. 18
I thank God that I speak in tongues morethan all of you. 19But in the church, I would rather speak five coherent words to instruct others than ten thousand words in a tongue.…" 1 Cor. 14:17-19 BSB
In closing, brother Cassidy,
I never said that I spoke tongues in church!
I have clearly stated that
I use a tongue when praying, privately, and it is not for sure, that the Apostle Paul did or didn't also use tongues in private prayer, which is assumed in his teachings above! And
if he prayed with a tongue, there is no proof that those who followed him and learned from him, didn't in fact do the very same!
The truth is, everything that you have so professionally laid out as an argument, based upon your opinions and views, is exactly that.
YOUR VIEWS and OPINIONS! You sir, have no more certainty of what you speak, then those of us who experienced and use a prayer language! And I believe that your views should come with that kind of DISCLAIMER!
I appreciate greatly, your knowledge and education in theology,
but, there are going to be opposing opinions and views.
Heck, even doctors disagree on how to treat physical or emotional problems. That is why a person who uses a D.O. should be aware,
that a Doctor of Osteopathy sees and does things differently
than let's say a M.D.