Psalm 39:4 in the King James Version
LORD, make me to know mine end, and the measure of my days, what it is; that I may know how frail I am.
Context
3 My heart was hot within me. While I meditated, the fire burned. I spoke with my tongue:
4 “LORD, show me my end, what is the measure of my days. Let me know how frail I am.
5 Behold, you have made my days hand widths. My lifetime is as nothing before you. Surely every man stands as a breath.” Selah.