1 Corinthians 14:13-15

American Standard Version

¹³ Wherefore let him that speaketh in a tongue pray that he may interpret. ¹⁴ For if I pray in a tongue, my spirit prayeth, but my understanding is unfruitful. ¹⁵ What is it then? I will pray with the spirit, and I will pray with the understanding also: I will sing with the spirit, and I will sing with the understanding also.