The best lesson I ever learned about God’s grace came as an eight year-old at the piano with my dad. Undoubtedly, there is extraordinary significance in God’s decision to portray himself to us so often as a father. For one, we know that suspended within God’s character is an incomprehensible tension between his justice and mercy—his righteousness and grace. And perhaps it’s in the imaging gift of fatherhood that we see these tensions demonstrated (and demanded) most clearly of all. When I was s