Psalms 42:5

Why art thou cast down, bowed to the ground, O my soul, and why art thou disquieted, full of unrest and despondency, in me? No matter, however, what the affliction may be, there is one certain comfort. Hope thou in God, waiting steadfastly and confidently for His help; for I shall yet praise Him for the help of His countenance, the believer's faith trusting in a complete deliverance, holding the firm conviction that God's face would again be turned to Him in mercy. But a reaction once more sets in; there is an ebb, as well as a flow, of the tide of his joyful spirits.