I said, “I will watch my ways, lest I sin with my tongue;
I will set a curb on my mouth.”
Dumb and silent before the wicked, I refrained from any speech.
But my sorrow increased; my heart smoldered within me.
In my thoughts a fire blazed up, and I broke into speech:

Lord, let me know my end, the number of my days,
that I may learn how frail I am.
You have given my days a very short span; my life is as nothing before you.
All mortals are but a breath.

Psalm 39:1-6