Job 7:16
I loathe it; I would not live always: let me alone; for my days are vanity.
Nave's Topical Index—AKJV

Ecclesiastes 6:12
For who knows what is good for man in this life, all the days of his vain life which he spends as a shadow? for who can tell a man what shall be after him under the sun?
Nave's Topical Index—AKJV