What does the Bible say about anger and sin?

The Bible acknowledges the existence of righteous anger, as evident in instances of Moses and Jesus who expressed anger in response to sin and injustice. In Ephesians 4:26, Paul writes, 'Be angry and do not sin; do not let the sun go down on your anger.' This verse suggests that while anger itself is not sinful, it is crucial that it does not lead to sinful actions or harboring bitterness. The key is to navigate anger through the lens of righteousness, ensuring that our wrath aligns with God's will and character.