'Understand' in the Bible

Is there anyone who can understand his own thoughts except his own inner spirit? In the same way, no one can know the thoughts of God except God's Spirit.

Now, we have not received the spirit of the world but the Spirit who comes from God, so that we can understand the things that were freely given to us by God.

A person who isn't spiritual doesn't accept the things of God's Spirit, for they are nonsense to him. He can't understand them because they are spiritually evaluated.

Do you not know and understand that you [the church] are the temple of God, and that the Spirit of God dwells [permanently] in you [collectively and individually]?

But I will come to you soon, if the Lord is willing, and I will find out not just the talk of these arrogant people, but [evaluate] their [spiritual] power [whether they live up to their own claims].

Now as to things which have been sacrificed to idols. This is a subject which we already understand--because we all have knowledge of it. Knowledge, however, tends to make people conceited; it is love that builds us up.

If anyone imagines that he knows and understands anything [of divine matters, without love], he has not yet known as he ought to know.

But I want you to understand that Christ is the head of every man, and the man is the head of a woman, and God is the head of Christ.

Wherefore I give you to understand, that no man speaking by the Spirit of God calleth Jesus accursed: and that no man can say that Jesus is the Lord, but by the Holy Ghost.

And though I have the gift of prophecy, and understand all mysteries, and all knowledge; and though I have all faith, so that I could remove mountains, and have not charity, I am nothing.

For now [in this time of imperfection] we see in a mirror dimly [a blurred reflection, a riddle, an enigma], but then [when the time of perfection comes we will see reality] face to face. Now I know in part [just in fragments], but then I will know fully, just as I have been fully known [by God].

Yet even lifeless things, whether flute or harp, when producing a sound, if they do not produce distinct [musical] tones, how will anyone [listening] know what is piped or played?

So it is with you, if you speak words [in an unknown tongue] that are not intelligible and clear, how will anyone understand what you are saying? You will be talking into the air [wasting your breath]!

If anyone thinks and claims that he is a prophet [a true spokesman for God] or spiritually astute [filled with and energized by the Holy Spirit], let him recognize that the things which I write to you are the Lord’s commandment.