'Strength Faileth' in the Bible

For my life is spent with sorrow, and my years with sighing; my strength faileth through mine iniquity, and my bones are wasted.

Cast me not off in the time of old age; forsake me not when my strength faileth.

The iron-smith hath a chisel, and he worketh in the coals, and he fashioneth it with hammers, and worketh it with his strong arm; but he is hungry, and his strength faileth; he hath not drunk water, and he is faint.