For if I pray in an [unknown] tongue, my spirit prayeth, but my understanding is unfruitful.
Berean Study Bible (BSB) - 1 Corinthians 14:14 >For if I pray in a tongue, my spirit prays, but my mind is unfruitful.
Textus Receptus (TR) - 1 Corinthians 14:14 >Ἐὰν γὰρ προσεύχωμαι γλώσσῃ, τὸ πνεῦμά μου προσεύχεται, ὁ δὲ νοῦς μου ἄκαρπός ἐστι.