The teaching investigates God's desire for His children to overflow with the things of the spirit, especially speaking in tongues.
The Apostle Paul was the one God called to carry the leadership of the ministry as well as being the writer of the Church Epistles that gave the doctrine of Christianity.
What was the testimony of the Apostle Paul for this all important question of the importance of speaking in tongues? Here is what he said:
“I would that you all speak in tongues.” (I Cor. 14:5)
“I Thank my God, I speak in tongues more than you all.” (I Cor. 14:18)
“Forbid not to speak in tongues.” (I Cor. 14:39)