No, anger itself is not all bad. It motivates to promote the good, protect the precious, and fight evil. If you'd like 2 pictures of Jesus getting angry look here (John 2) and especially here (Revelation 19 - yikes). The problem is that we are all bad and our sin screws up what should be a good motivation - namely, our anger.
26 Be angry and do not sin; do not let the sun go down on your anger, 27 and give no opportunity to the devil.
There it is. Don't sin (dishonor, disobey God) when you're angry. And don't stay angry long because that opens the door for the devil himself, or one of his demons, to screw with you. Need I add that giving the devil an opportunity is not good?
So how do you harness your anger? It's not easy. The wise man of the Proverbs says that controlling your anger takes the strength of a warrior and big-time wisdom.
Proverbs 16.32 Whoever is slow to anger is better than the mighty, and he who rules his spirit than he who takes a city.
Proverbs 19.11 Good sense makes one slow to anger, and it is his glory to overlook an offense.
This last Proverb leads us to where we need to go. It is our glory to "overlook an offense." Why is it the glory of a man to forgive a sin? Because it points to the most glorious thing ever - the cross of Jesus that enabled our sins to be overlooked. Roy, the Righteous God has every reason to be royally wrathful towards you and me. He truly loves what is good and hates what is evil, and we deserve the justice of hell. Through the substitutionary atonement of Jesus (Him enduring what we deserve), our sins are forgiven and have peace with God.
When I'm angry the thing that defuses me best is the cross. There's 3 things we find at the cross for our anger problem:
1. I've sinned worse against God than anyone has or can against me.
2. Through Christ, God has completely forgiven me and loves me.
3. In His grace, I have the power and motivation to forgive and love the one I'm angry with.
A place to start:
Read Colossians 3.12-17.
Think about your sin and what God owes you.
Reaffirm your trust in Jesus to save you.
Think of what God has done for you.
Think of who you're angry with and forgive them.
Make plans to treat them the way God would have you.
