13 For this reason the one who speaks in a tongue should pray that they may interpret what they say.
References for 1 Corinthians 14:13
      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