Else when thou shalt bless with the spirit, how shall he that occupieth the room of the unlearned say Amen at thy giving of thanks, seeing he understandeth not what thou sayest? For thou verily givest thanks well, but the other is not edified. I thank my God, I speak with tongues more than ye all: Yet in the church I had rather speak five words with my understanding, that by my voice I might teach others also, than ten thousand words in an unknown tongue. 1 Corinthians 14:16-19

The Apostle Paul makes an important statement here “ In the Church, I had rather speak five words with my understanding, than ten thousands words in an unknown tongue” You have heard the phrase quality over quantity, Paul would rather speak only 5 words that was understandable and edifying to the Church than ten thousand words that nobody could understand

Again this goes back to why are we speaking tongues in Church? Are you trying to edify the body of Christ with a message or are you trying to puff yourself up? There has to be a reason and purpose for what your saying, God doesn’t just randomly make up words with no edification. 

As Paul says here also, and I’ll paraphrase, “How can those in the room say “Amen” and they don’t understand what you say” When the Church says Amen , they are agreeing to something being said, the Church can’t agree or they shouldn’t agree, if they don’t understand what is being proclaimed

Brethren, be not children in understanding: howbeit in malice be ye children, but in understanding be men. In the law it is written, With men of other tongues and other lips will I speak unto this people; and yet for all that will they not hear me, saith the Lord. 1 Corinthians 14:20-21

It’s interesting here because the Apostle Paul quotes Isaiah , there are a couple of things we can conclude from this reference.

 1. Speaking in tongues is a New Covenant practice- as Isaiah referenced , the prophets beforehand spoke in clear language to the people of Israel, yet they still rejected Gods Word, now that the Holy Spirit speaks through foreign tongues, its clear the New Covenant is for All nations and people and not just Israel

2. Speaking in tongues is a sign and confirmation of the New Covenant in Christ. Those who claim Christ is just a renewal of the Mosaic Covenant, would have to dismiss the gifts of speaking in tongues at Pentecost all together

3. Paul warns the Church to be mature in the use of speaking of tongues and not like spiritual children. Even discussing the topic of tongues we see brings a strong reaction and sometimes division among the Church. The use of tongues is a powerful gift given by the Holy Spirit, it should be used with wisdom and caution of Gods providence.