Psalms includes many songs of celebration, but there are even more prayers of lament, complaint, and even cries for justice. “How long, O LORD?” is a frequent prayer in the psalms,

Isaiah’s faith drives this lament. He believes three things about God: First, God is sovereign. He can do something. Second, God is love. He is for me. He wants to do something. And finally, God is a covenant-keeping God. He is bound by his own word. He will do something. Isaiah’s faith feeds off the character of God.