"In your anger do not sin": Do not let the sun go down while you are still angry, and do not give the devil a foothold. - Ephesians 4:26-27
Anger is not always wrong, but what we do with our anger determines whether we are acting righteously or sinfully. We should be angered by acts of ungodliness, unrighteousness, injustice, and inequity. These things anger God as well.
But if you are angry because someone has disturbed your pride, self-sufficiency, status, prestige, or power, your reaction will likely be sinful. And sinful anger is often expressed in harshness, cruelty, bitterness, and a lack of control.
We must examine our hearts when our kids make us angry. If it is righteous anger, let it motivate you to take action and deliver consequences. Sin needs to be addressed, and we honor God by delivering those consequences with empathy and love. If it is sinful anger, pray for the courage to confess it, repent, and resolve it.
Examine your anger to determine the motives behind it.
That's one of the most insightful thought provoking devotionals I've read so far in the series (I'm on day 68 of 260. My anger with Sean is almost always sinfully based.