Job 9:28 Meaning

26They are passed away as the swift ships: as the eagle that hasteth to the prey.

27If I say, I will forget my complaint, I will leave off my heaviness, and comfort myself:

28I am afraid of all my sorrows, I know that thou wilt not hold me innocent.

29If I be wicked, why then labour I in vain?

30If I wash myself with snow water, and make my hands never so clean;