'Knows' in the Bible

And who knows whether he will be a wise man or a fool? Yet he will take over all my work that I labored at skillfully under the sun. This too is futile.

Who knows if the spirit of people rises upward and the spirit of animals goes downward to the earth?

So I concluded that there is nothing better for a person than to enjoy [the fruit of] his labor, for this is his lot in life. {For no one knows what will happen in the future.}

A poor yet wise lad is better than an old and foolish king who no longer knows how to receive instruction.

It never sees the sun and it never knows anything; it is better off than he.

What advantage then does the wise man have over the fool? What advantage is there for the poor person who knows how to conduct himself before others?

Because many words lead to pointlessness, how do people benefit from this? 12Who knows what is best for people in this life, every day of their pointless lives that they pass through like a shadow? Who informs people on earth what will come along after them?

For who knows what is good for man in life, in the few days of his futile life that he spends like a shadow? Who can tell man what will happen after him under the sun?

for you also know that you too have cursed others many times.

Who is like the wise person, and who knows the interpretation of a matter? A man’s wisdom brightens his face, and the sternness of his face is changed.

The one who keeps a command will not experience anything harmful, and a wise heart knows the right time and procedure.

Yet no one knows what will happen because who can tell him what will happen?

I saw all of it as the activity of God. Frankly, a human being cannot understand what happens on earth, because however hard a man works to discover it, he will not find out. Despite what he thinks he knows, he will not be able to figure it out.

In light of all of this, I committed myself to explain it this way: the righteous and the wise, along with everything they do, are in the hands of God. Furthermore, as to love and hate, no human being knows everything concerning them.

Whatever your hand finds to do--do [it] with [all] your might; for in Sheol--where you are going--no one works, plans, knows, or thinks about anything.

In addition, no human being knows his time: Like fish captured in a cruel net, or as birds caught in a snare, so also are human beings caught by bad timing that surprises them.

Yet the fool multiplies words.No one knows what will happen,and who can tell anyone what will happen after him?