“How can God have mercy on sinners without destroying justice? What can it mean that God forgives iniquity and transgression and sin, yet by no means clears the guilty (Ex. 34:7)? How can a righteous and holy God justify the ungodly (Rom. 4:5)?
The answer to all these questions is found at the cross of Calvary, in Jesus’ substitutionary death for his people. A righteous and holy God can justify the ungodly because in Jesus’ death, mercy and justice were perfectly reconciled. The curse was rightly executed, and we were mercifully saved.”
– Greg Gilbert, What is the Gospel? (Wheaton, Ill.: Crossway, 2010), 69.
(HT: Of First Importance)