Lamentations 3 is a chapter about moving from grief to hope. The first 20 verses are about grief and sadness and the darkness the writer feels has come over his life. But the chapter turns at v.21, where he dares to hope, based on the character of God. The character of God is not based on our circumstances. So, no matter what our world looks like, there is always hope. He encourages us to examine ourselves and turn back to the Lord.