'Frail' in the Bible

Have mercy on me, Lord, for I am frail! Heal me, Lord, for my bones are shaking!

Put them in [reverent] fear of You, O Lord,So that the nations may know they are but [frail and mortal] men. Selah.

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