1 Corinthians 14:13-15

New International Version

¹³ For this reason the one who speaks in a tongue should pray that they may interpret what they say.^{(A) 14} For if I pray in a tongue, my spirit prays,^(B) but my mind is unfruitful. ¹⁵ So what shall I do? I will pray with my spirit,^(C) but I will also pray with my understanding; I will sing^(D) with my spirit, but I will also sing with my understanding.