4. What principle, seen also in several psalms, allows the psalmist to change from a spirit of deep distress to hope in Lam. 3?
As he reflects on the lovingkindness of God, he is able to see beyond the immediate tragedy and see that there is a basis for hope. Because God is sovereign and is favorably disposed toward us, we can be confident that there is a future, and that God's purpose for us has not been thwarted by the disaster.