NET
13 Here is a misfortune on earth that I have seen: Wealth hoarded by its owner to his own misery.
Darby
13 There is a grievous evil that I have seen under the sun: riches kept for the owners thereof to their hurt;
KJV
13 There is a sore evil [which] I have seen under the sun, [namely], riches kept for the owners thereof to their hurt.