Doubt and Despair

Psalms 73:13-16

Surely in vain have I cleansed my heart, And washed my hands in innocency;

For all the day long have I been plagued, And chastened every morning.

If I had said, I will speak thus; Behold, I had dealt treacherously with the generation of thy children.

When I thought how I might know this, It was too painful for me;