Read Psalm 39:6 Using Other Translations
Surely every man walketh in a vain shew: surely they are disquieted in vain: he heapeth up riches, and knoweth not who shall gather them.
Surely a man goes about as a shadow! Surely for nothing they are in turmoil; man heaps up wealth and does not know who will gather!
We are merely moving shadows, and all our busy rushing ends in nothing. We heap up wealth, not knowing who will spend it.