'Activity' in the Bible

And I set my mind to seek and explore by [man’s] wisdom all [human activity] that has been done under heaven. It is a miserable business and a burdensome task which God has given the sons of men with which to be busy and distressed.

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—

The word of the Lord came to me, saying, “Jeremiah, what do you see?” And I said, “I see the branch of an almond tree.”

I will make your horde [of people] fall by the swords of the mighty—all of them are tyrants among the nations,And they will devastate the pride and presumption of Egypt,And all its hordes will be destroyed.