5 Bible Verses about Prayer Language

In like manner also the Spirit affords assistance to our infirmities: for even this, what we should pray for as we ought, we know not: but the same Spirit more abundantly maketh intercession for us with groanings unutterable.

For he that speaketh in an unknown tongue, speaketh not to men, but to God: for no man understandeth him; although in spirit he speaketh mysterious truths.

For if I pray in an unknown tongue, my spirit prayeth, but my mind produces no fruit. What then is my object? I will pray with the spirit, and I will pray with the understanding also: I will sing psalms with the spirit, and I will sing psalms with the understanding also.

praying at every opportunity with all prayer and supplication in Spirit, and watching for this very purpose with perseverance and intercession for all the saints;

But ye, beloved, building yourselves up on your most holy faith, praying by the Holy Ghost,