Why is understanding God's anger and mercy important for Christians?

In Micah 7:18 and related passages, we learn that while God does exercise anger towards sin, He ultimately delights in mercy and does not hold His anger forever. This knowledge is vital for Christians as it highlights the balance of God's justice and grace. Recognizing that God's anger towards sin was fully satisfied in Christ allows believers to live confidently in His mercy while striving for holiness. It fosters a deeper appreciation for the sacrifice of Christ and spurs believers to extend grace to others.