Theodore Epp discusses the appropriate response to anger, emphasizing that while it is right to be angry at sin and injustice, believers must guard against allowing personal resentment to lead to sin. He highlights the importance of resolving anger before the day ends, as Paul instructs in Ephesians 4:26, and warns that human anger does not produce God's righteousness. Epp illustrates Jesus' righteous anger towards hypocrisy and blasphemy, reminding us that while we can be righteously indignant, we must be careful not to sin in our reactions. Ultimately, he encourages believers to practice being quick to listen, slow to speak, and slow to anger, aligning their responses with God's will.