For if I pray in an unknown tongue, my spirit prayeth, but my understanding is unfruitful.
For if I pray in a tongue, my spirit prays, but my mind is unfruitful.
Ἐὰν γὰρ προσεύχωμαι γλώσσῃ, τὸ πνεῦμά μου προσεύχεται, ὁ δὲ νοῦς μου ἄκαρπός ἐστιν.
Ean gar proseychōmai glōssē, to pneyma moy proseychetai, o de noys moy akarpos estin.