'Man's' in the Bible

Then He said to them, “Watch out and guard yourselves against every form of greed; for not even when one has an overflowing abundance does his life consist of nor is it derived from his possessions.”

He [eagerly] longed to eat the crumbs which fell from the rich man’s table. Besides, even the dogs were coming and licking his sores.

and they questioned Him, saying, “Teacher, Moses wrote for us [a law that] if a man’s brother dies, leaving a wife and no children, his brother should marry the wife and raise children for his brother.