This psalm does something unusual. It lets despair speak in full, deep calls to deep, your waves have swept over me, without rushing to correct it, and then it turns and directly questions itself: why, my soul, are you downcast? The psalmist isn't performing certainty he doesn't feel. He's actually interrogating his own soul mid-collapse. And the resolution isn't an answer to why. It's a redirected hope: put your hope in God, for I will yet praise him. Notice that word yet. The praise hasn't arrived. It's future tense, spoken on the far side of an emotional state that hasn't actually resolved yet within the poem itself.