Psalms 39:2-6

I was dumb with silence, I held my peace, even from good; and my sorrow was stirred.

My heart was hot within me, while I was musing the fire burned: then spake I with my tongue,

LORD, make me to know mine end, and the measure of my days, what it is; that I may know how frail I am.

Behold, thou hast made my days as an handbreadth; and mine age is as nothing before thee: verily every man at his best state is altogether vanity. Selah.

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.