'Observed' in the Bible

I also observed under the sun: there is wickedness at the place of judgment and there is wickedness at the place of righteousness.

Again, I observed all the acts of oppression being done under the sun. Look at the tears of those who are oppressed; they have no one to comfort them. Power is with those who oppress them; they have no one to comfort them.

Here is a tragedy I have observed under the sun, and it weighs heavily on humanity:

I observed all the work of God and concluded that man is unable to discover the work that is done under the sun. Even though a man labors hard to explore it, he cannot find it; even if the wise man claims to know it, he is unable to discover it.

I have observed that this also is wisdom under the sun, and it is significant to me: