How do we know God's mercy and justice can coexist?

The coexistence of mercy and justice is primarily observed in the work of Jesus Christ on the cross. Romans 3:26 states that God is both just and the justifier of the one who has faith in Jesus. In essence, while God's justice requires the punishment of sin, His mercy allows for forgiveness through Christ's atoning sacrifice. Thus, God does not compromise His holiness or righteousness; rather, He fulfills the demands of both attributes through the death and resurrection of His Son. This divine mechanism illustrates a profound truth: in Christ, God's attributes unite to offer salvation to lost humanity.