1 Corinthians 14:14-15 NIV

14 For if I pray in a tongue, my spirit prays, but my mind is unfruitful.

References for 1 Corinthians 14:14

      15 So what shall I do? I will pray with my spirit, but I will also pray with my understanding; I will sing with my spirit, but I will also sing with my understanding.

      References for 1 Corinthians 14:15