'Knows' in the Bible

And who knows whether he will be wise or foolish? Either way, he will take possession of everything that I have done on earth, especially where I have excelled. This also is pointless.

Who knows whether the spirit of human beings ascends, and whether the spirit of animals descends to the earth?

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?

Who is really wise? Who knows how to interpret this saying: "A person's wisdom improves his appearance, softening a harsh countenance."

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.

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.