5 Bible Verses about Prayer Language

Likewise the Spirit also helps our weakness: for we know not what we should pray for as we ought but the Spirit himself makes intercession for us with groanings which cannot be uttered.

For he that speaks in an unknown tongue speaks not unto men, but unto God: for no man understands him; but in the spirit he speaks mysteries.

For if I pray in an unknown tongue, my spirit prays, but my understanding is unfruitful. 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.

Praying always with all prayer and supplication in the Spirit, and watching thus with all perseverance and supplication for all saints;

But you, beloved, building up yourselves in your most holy faith, praying in the Holy Spirit,