'Understanding' in the Bible

Now I urge you, brothers, in the name of our Lord Jesus Christ, that all of you agree in what you say, that there be no divisions among you, and that you be united with the same understanding and the same conviction.

For it is written, I will destroy the wisdom of the wise, and will bring to nothing the understanding of the prudent.

Yet we do speak wisdom among those spiritually mature [believers who have teachable hearts and a greater understanding]; but [it is a higher] wisdom not [the wisdom] of this present age nor of the rulers and leaders of this age, who are passing away;

but we speak God’s wisdom in a mystery, the wisdom once hidden [from man, but now revealed to us by God, that wisdom] which God predestined before the ages to our glory [to lift us into the glory of His presence].

But the natural [unbelieving] man does not accept the things [the teachings and revelations] of the Spirit of God, for they are foolishness [absurd and illogical] to him; and he is incapable of understanding them, because they are spiritually discerned and appreciated, [and he is unqualified to judge spiritual matters].

To one is given through the [Holy] Spirit [the power to speak] the message of wisdom, and to another [the power to express] the word of knowledge and understanding according to the same Spirit;

For one who speaks in an unknown tongue does not speak to people but to God; for no one understands him or catches his meaning, but by the Spirit he speaks mysteries [secret truths, hidden things].

For if I pray in an unknown tongue, my spirit prayeth, 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.

Yet in the church I had rather speak five words with my understanding, that by my voice I might teach others also, than ten thousand words in an unknown tongue.

Brethren, be not children in understanding: howbeit in malice be ye children, but in understanding be men.