As I begin, I would have you to know that speaking in tongues is a sign that fulfills the Scriptures whereas the law is written: "With men of other tongues (other languages) and other lips will I speak unto this people; and yet for all that will they not hear me, " saith the Lord. Not that you should speak in another language, that is if you do not already speak partially or fluently in another tongue, but only to show that the word of God, all that He had spoken shall also go forth in other languages besides that which it was received. Now, you can speak with a new tongue or in tongues, and probably already do, but you are not aware of it because of Satan and his evil ways. (Jude 1:10).
Our Lord Jesus Christ said that once we are filled with power from above that we would speak with new tongues. So then, do you believe that Jesus Christ is Lord? If so, would you tell someone of Him and what he stood for? If you answer is "yes," then you, my brothers and sisters, do speak with new tongues.
Know this, that speaking in other tongues and speaking with a new tongue are two different sayings. Our Lord said his word would go forth in other tongues. He did not say you would speak in other tongues, but He did say you, once filled with the Holy Spirit (God's words) would speak with a new tongue - which is simply teaching that which He taught. (ST. Mark 16:17).
Jesus Christ stated it, "They shall speak with new tongues." Speaking, praying or singing in tongues is similar to walking in the Spirit. You do not change your language, just your message as in walking in the Spirit, you don't change your style of walking - only your deeds.
Another short example: Speaking in tongues is giving a message from God, not man, as walking in the Spirit is doing the will of God and not man's.
Some of the men even mocking said that the Apostles were full of new wine, not because the Apostles babbled (to utter inarticulate or meaningless sound or confused speech), which they did not, even though Satan teaches this, but because they would not receive the word of God which was spoken clearly to them by the Apostles as the Holy Spirit gave them utterance in other languages, fulfilling all that the Lord had spoken."...and yet for all that will they not hear me..."When the Apostles spoke in other tongues they spoke fluently the exact word of God. They did not babble as Satan teaches. (Zac. 8:23) "....it shall come to pass,...."
So then, if you believe God, you too, already and will speak with a new tongue -- which is part of the fulfilling of the New Testament. It's simply the renewal of the mind and the controlling of the tongue to speak that which is from God's Son. "They shall speak with new tongues," as He (Jesus Christ) said and did Himself.
In the Holy bible at John 8:43 where Jesus Christ says, "Why do you not understand my language? Because you cannot bear to listen to my message." It is here where you can see for yourself that He also spoke with a new tongue, later and now called Speaking in Tongues. (1 Corinthians 14:18)
Jesus Christ says this: "But I say unto you, that every idle word that men shall speak, they shall give account thereof in the day of judgement. For by thy words thou shalt be justified, and by thy words thou shalt be condemned." (Matthew 12:36-37).
Page 13 "Talking It Over" by Glenn Ford
"Why do you not understand my language?"