1 Corinthians 14:15-18 St Paul from the Trenches 1916 (GWC)

15. If I pray with the mind as well as the Spirit, and sing with understanding as well as ecstasy, and interpret to the mind and consciousness the tongue of the Spirit which I utter, then is that great purpose fulfilled.

16. Then will those who hearken to your blessing and giving of thanks say Amen to it. For the demands of the understanding have been fulfilled.

17. But if you give thanks with spiritual voices only, in a language unknown to those who fill the place of the humble listeners and the congregation, however well you do it, the church is not fulfilled and is not edified.

18. My brethren, this language of the Spirit utters itself richly in me, and in more frequent and fuller tones than in all of you,

1 Corinthians 14