For who hath known the mind of the Lord? who will instruct him? But we have the mind of Christ.

Brethren, be not children in your minds: though in naughtiness be ye children, but in your minds be men complete.

Now I conjure you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing, and that there be no schisms among you; but that ye be perfectly united together in the same mind and the same sentiment.

For if I pray in an unknown tongue, my spirit prayeth, but my mind produces no fruit.