Paul does not tell the Ephesians to stop being angry. He quotes Psalm 4 and gives the anger a deadline.
That is more honest than most advice. A coworker takes credit for your project in front of the whole team. Your teenager lies to your face about where they were. The heat in your chest is not a moral failure. Some things should make you angry, and a person who feels nothing at injustice has a problem of their own.
The trouble starts later. You replay the meeting in the car. You draft the email in your head at dinner. By bedtime you have added older offenses to the file and assigned the coworker motives you cannot actually see. The anger that was a fair reaction at ten in the morning has become something you are feeding.
That is the point of the sunset. Paul is writing to a church learning to live as one body, and the verses around this one are about speaking truthfully and getting rid of bitterness and rage. He adds that lingering anger gives the devil a foothold. A foothold is a small thing. It is a place to stand, enough for someone to get a grip and climb. Unresolved anger rarely wrecks you in a day. It gives the enemy somewhere to stand while resentment does the slower work.
The deadline is not a demand that every conflict be settled by evening. Some conversations cannot happen that fast. It is about what you do with the anger inside yourself before you sleep.
So tonight, before bed, deal with it on purpose. Tell God plainly what happened and why it made you angry. Then decide one concrete next step, whether that is a calm conversation tomorrow or a decision to let this one go. Write the step down if it helps. Then stop rehearsing it. Whatever is left can wait for the morning, but you do not have to take it to bed.
