God will forgive my sins,” quipped Heinrich Heine on his deathbed. “It’s his job.” How different are the viewpoints of Isaiah, Paul and Luke! They note an ongoing theological tension between the assurance of God’s kindness and the call to immediate repentance. Yes, God is merciful, not punishing as we deserve, not automatically correlating our misdeeds with disasters. But there is no room for complacency: if we think we’re standing, we should watch that we do not fall.