“Why are you cast down, O my soul, and why are you in turmoil within me? Hope in God; for I shall again praise him, my salvation and my God” (Psalm 42:5, ESV). The psalmist follows his statement of longing for God (vv.1-2) with words of mourning and anguish, reflecting on a joyful fellowship with God that seems broken (vv.3-4; cf. vv.9-10). Then he comes to this question and corresponding charge (v.5), which may be taken as the key theme in the psalm, for it recurs exactly at the end, in verse 11. He interrogates his soul, searching for the reason behind its anguished grief; and he points himself to the hope of all the righteous: the redeeming power of God.
Hope in God, when you are downcast; call out to Him in the depths of your sorrow, and even in despair. God is able to save. God is able to redeem, restore, and heal. With God, the future is always bright with possibilities, for no one and no situation is beyond the power of His redeeming love.