1 Corinthians 14:13-15

World English Bible

¹³ Therefore let him who speaks in another language pray that he may interpret. ¹⁴ For if I pray in another language, my spirit prays, 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.