When the marriage vows have been violated, anger is a natural emotion.  It’s important to remember that Scripture does not condemn all expressions of anger.  In fact, the person should be angry—at the sin, at the destructive consequences, and at the thief who came “only to steal and kill and destroy” (John 10:10a).

God Himself gets angry, albeit slowly and not without an abundance of compassion and grace: “The LORD, the LORD, a God merciful and gracious, slow to anger, and abounding in steadfast love and faithfulness,” (Exodus 34:6).

Scripture warns us, though, “Be angry, and yet do not sin; do not let the sun go down on your anger, and do not give the devil an opportunity” (Ephesians 4:26-27).  Anger without boundaries allows Satan to make things worse.

For more help understanding anger, please read Dealing with Your Anger  by David Powlison.