'Know' in the Bible

And I set my mind to know [practical] wisdom and to discern [the character of] madness and folly [in which men seem to find satisfaction]; I realized that this too is a futile grasping and chasing after the wind.

I know that there is nothing better for them than to rejoice and to do good as long as they live;

I know that whatever God does, it endures forever; nothing can be added to it nor can anything be taken from it, for God does it so that men will fear and worship Him [with awe-filled reverence, knowing that He is God].

Guard your steps and focus on what you are doing as you go to the house of God and draw near to listen rather than to offer the [careless or irreverent] sacrifice of fools; for they are too ignorant to know they are doing evil.

I turned around and directed my heart to know, to investigate and to seek [skillful and godly] wisdom and the reason for things, and to know that wickedness is folly and that foolishness is madness [leading to stupidity and recklessness].

Whoever keeps and observes a royal command will experience neither trouble nor misery;For a wise heart will know the proper time and [appropriate] procedure.

For no one knows what will happen;So who can tell him how and when it will happen?

Though a sinner does evil a hundred times and his life [seemingly] is prolonged [in spite of his wickedness], still I know that it will be well with those who [reverently] fear God, who fear and worship Him openly [realizing His omnipresence and His power].

When I applied my mind to know wisdom and to see the activities [of mankind] that take place upon the earth—how some men seem to sleep neither day nor night—

For the living know that they will die; but the dead know nothing, and they no longer have a reward [here], for the memory of them is forgotten.

The labor of a fool so wearies him [because he is ignorant] that he does not even know how to go to a city.

Give a portion to seven, or even [divide it] to eight, for you do not know what misfortune may occur on the earth.

Just as you do not know the way and path of the wind or how the bones are formed in the womb of a pregnant woman, even so you do not know the activity of God who makes all things.

Sow your seed in the morning and do not be idle with your hands in the evening, for you do not know whether morning or evening planting will succeed, whether this or that, or whether both alike will be good.

Rejoice, young man, in your childhood, and let your heart be pleasant in the days of your young manhood. And walk in the ways of your heart and in the desires of your eyes, but know that God will bring you into judgment for all these things.