1 Corinthians 14:12-15

¹²So you too, since you are eager to possess spiritual gifts, strive to excel for the edification of the church.

¹³Therefore, one who speaks in a tongue is to pray that he may interpret. ¹⁴For if I pray in a tongue, my spirit prays, but my mind is unproductive. ¹⁵What is the outcome then? I will pray with the spirit, but I will pray with the mind also; I will sing with the spirit, but I will sing with the mind also.