This is the most thorough and true explanation of speaking in tongues that you can read.
I thank God through Jesus,
that God has revealed this to me.
May God's truth keep you close to Him and Jesus Christ.
In the Old Testament, we read this about tongues...
Isaiah 28:11 Very well then, with foreign lips
and strange tongues God will speak to this people,
12 to whom he said, "This is the resting place, let the weary rest";
and, "This is the place of repose"—
but they would not listen.
Now read what the New Testament says about tongues...
1 Corinthians 14:21 In the Law it is written:
"Through men of strange tongues
and through the lips of foreigners
I will speak to this people,
but even then they will not listen to me," says the Lord.
22Tongues, then, are a sign, not for believers but for unbelievers; prophecy, however, is for believers, not for unbelievers.
The nowadays tongue speakers today use their so-called tongue speaking for themselves and other believers in their church, they do not use it for unbelievers as the Bible tells us it is for. Do you see unbelievers coming to God because they hear foreigners to them speaking the words of God in their many languages? No. God can make anything happen, yet tongue speaking is not happening as it did when Jesus and the Apostles and Prophets were laying the foundation.
We can see from the scriptures that speaking in tongues was prophesied about in the Old Testament, that the Lord would speak to the Jews, as stated in Isaiah 28. In the New Testament, we can see that this is a fulfilled prophecy, as confirmed by Apostle Paul in 1 Corinthians 14:21. Since the biblical speaking in tongues were for a sign, and God gave the sign for the purpose as prophesied in the Old Testament, it would make sense to believe that speaking in tongues is a gift that would stop.