'Left' in the Bible

What advantage does man have from all his workWhich he does under the sun (while earthbound)?

For what does a man get from all his labor and from the striving and sorrow of his heart with which he labors under the sun?

and that wealth is lost in troubled circumstances. Then a son is born, but there is nothing left for him.

Not only that, but I have seen the wicked approaching and entering the temple, and as they left the holy temple, they boasted in the city that they had done so. This also is an enigma.

A wise man's heart is at his right hand; but a fool's heart at his left.