Anger over an offense should be dealt with swiftly, and that anger must not be allowed to linger. Forgiveness and reconciliation is what anger’s end game should be (Ephesians 4:32).
God is slow to anger (Ps. 103:8, 145:8), but the Psalmist also asks the Lord how long “shall thy wrath burn like fire (Ps. 89:46)?” Anger is likened to a kindling of fire (Ps. 78:21). The hebrew word aph (אף) is commonly translated as anger or wrath, and it is used to describe the heat of passion when one is transgressed by another party or parties. God’s wrath in the New Testament is likened to a goblet of wine slowly filling up which will suddenly overflow in holy judgement upon evildoers. All this together should show us that anger is not a sin, but what our anger is directed at determines whether our anger is righteous or wicked.
If a genuine transgression is committed against you, anger is a proper response; but the question comes down to whether it was a real offense or only a perceived one. Furthermore, Paul tells us in Ephesians 4:26, “Be ye angry, and sin not,” followed by the famous admonition to not let the sun go down on your anger. Meaning, anger over an offense should be dealt with swiftly, and that anger must not be allowed to linger. Forgiveness and reconciliation is what anger’s end game should be (Eph. 4:32).