Psalm 39:1-6

I said, I will take heed to my ways, That I sin not with my tongue: I will keep my mouth with a bridle, While the wicked is before me. 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.