'Thereof' in the Bible

When goods increase, they are increased that eat them; and what advantage is there to the owner thereof, save the beholding of them with his eyes?

There is a grievous evil which I have seen under the sun, namely , riches kept by the owner thereof to his hurt:

Every man also to whom God hath given riches and wealth, and hath given him power to eat thereof, and to take his portion, and to rejoice in his labor-this is the gift of God.

a man to whom God giveth riches, wealth, and honor, so that he lacketh nothing for his soul of all that he desireth, yet God giveth him not power to eat thereof, but an alien eateth it; this is vanity, and it is an evil disease.

for it cometh in vanity, and departeth in darkness, and the name thereof is covered with darkness;

Whatsoever hath been, the name thereof was given long ago; and it is know what man is; neither can he contend with him that is mightier than he.

Better is the end of a thing than the beginning thereof; and the patient in spirit is better than the proud in spirit.