When Samuel first anointed Saul to be king over Israel, Samuel told him God's Spirit would rush upon him and he would prophesy. (The whole story is found in 1 Samuel 10: 1-6) Now what's interesting is Samuel told Saul that once that happens, he would be changed into another man. This is similar to what happened at Pentecost. The Holy Spirit came upon the Church, and they were changed, glorifying God and speaking as He gave them utterance.
There's another instance in 1 Samuel, at the beginning of the book where it talks about Samuel's mother, Hannah. In the beginning, she had no children, and this made her sorrowful. One day she came before the tabernacle and made a vow before Yahweh that if He gave her a son, she would give her son back to Him to serve all the days of his life. It so happened that on this particular day, Eli the high priest at the time was sitting near the doorpost, and was watching Hannah. He saw Hannah's lips moving as she continued to pray, but he didn't hear her voice. Eli thought she was drunk. He then told her to put away her wine. Is this not another picture of what happened at Pentecost? Some of the crowd who witnessed the Church speaking with other tongues mocked them and saying they were full of new wine! So Hannah already made her vow, yet she continued to pray before Yahweh afterward. Her lips were moving, so its clear she was saying something, but the sound of her voice was not heard by Eli. Given the similar picture of what happened at Pentecost and the accusation of being drunk, I believe God took control over Hannah's tongue, and she began praying His will.
There is one last instance I will mention going back to Numbers 11: 1-29, where Moses became exhausted by all the complaining of the people, and he asked Yahweh to kill him. Yahweh told Moses to bring 70 elders of the people and bring them before the Tent of Meeting. There He would meet Moses, and take some of the Spirit that was on Moses, and put it on them, to help Moses bear the burden. Now when the elders came before the Tent of Meeting, God came down and did what He said, dividing and putting the Spirit upon them. What is the first thing they do when they receive the Spirit? Prophesy!!! Again, is this not a picture of what happened at Pentecost? All of this I believe shows us a connection between speaking in tongues and prophesying.
This also shows us the power behind speaking in tongues and why its considered edification for the one speaking. After Hannah spoke, she received her son Samuel. And after she gave Samuel back to the Lord, she went on to have three more sons and two daughters. Saul after he spoke, went on to become king. In fact Samuel even went on to tell Saul this in 1 Samuel 10:7.......................
Now when these signs meet you, do what your hand finds to do, for God is with you...............
This confirms the benefits of this gift because ultimately the speaking is controlled by God Himself. Hannah is the only one where its not specifically mentioned God was upon her, but she herself was in His presence before the Tabernacle. Now of course I don't believe everyone one who claims to speak an unknown tongue today is actually speaking by the inspiration of God. Of course!!!!!!!!!
That's a given. However I see we've allowed charlatans to rule over our whole opinion concerning tongues. I get the feeling many see it all as babble. That's hazardous thinking. Its no wonder we don't see God's power flowing in our lives like a river. Don't allow mockers to rule how you see God.