Let all bitterness, and wrath, and anger, and clamour, and evil speaking, be put away from you, with all malice: And be ye kind one to another, tenderhearted, forgiving one another, even as God for Christ's sake hath forgiven you. Ephesians 4:31-32
In the brain, the amygdala, |əˈmigdələ|, is the part of the brain that deals with the processing and memory of emotional reactions. It wants to do something, and the time between a trigger event and a response from the amygdala can be a quarter of a second. But at the same time, blood flow is increasing to the frontal lobe, specifically the part of the brain that's over the left eye. This area controls reasoning and is likely what's keeping you from hurling a vase across the room. These areas generally balance each other out quickly; according to some research, the neurological response to anger lasts less than two seconds. This is why you get a lot of advice about counting to 10 when angry.
Anger's physical side effects explain why you frequently see studies about the damage that this emotion can do to our bodies. In one study of almost 13,000 subjects, individuals with the highest levels of anger had twice the risk of coronary artery disease and three times the risk of heart attack, as compared to the subjects with the lowest levels of anger. Some scientists think that chronic anger may be more dangerous than smoking and obesity as a factor that will contribute to early death. (How Stuff Works a Discovery Channel)
How does God want us to handle our anger?
How can Christians express their anger? Some say that anger should be given over to such actions as beating or bitting a pillow. Is it true that feelings must be expressed in this kind of display? Should Christians ventilate their feelings? Some medical authorities say that incorrect handling of stressful situations can cause any one of at least 50 physical diseases. The medical term for physical ailments that start in the mind as stress and that result in real physical ailments is "psychosomatic." The word "psychosomatic" is the combination of the Greek words for "mind" and "body."
What can a Christian do to release feelings of anger? Is there a Christian way to vent feelings of anger? To answer these questions, it is necessary to consider whether or not anger is sinful. Ephesians 4:26 says, "Be angry, and sin not: let not the sun go down upon your wrath.". If there has been a misunderstanding, and it can be resolved by talking through the problem with the other person(s), that is wonderful! However, the idea that problems always can be solved by communications, or be solved before bedtime, denies the reality of the old nature in the believer. If by communications one person asks the other for forgiveness, forgiveness must be granted, “ Lord, how oft shall my brother sin against me, and I forgive him? till seven times? Jesus saith unto him, I say not unto thee, Until seven times: but, Until seventy times seven” Matthew 18, 21-22. Angry feelings can be decreased, or even eliminated, in the one who receives or grants forgiveness.
Forgiveness is one way that believers can work through their feelings of anger. Even if the other person is far away or is not willing to talk about the problem or will not ask forgiveness, the believer can still be obedient to the command of Mark 11:25, to forgive. And when ye stand praying, forgive, if ye have ought against any: that your Father also which is in heaven may forgive you your trespasses.
In Mark 11:25, forgiveness is commanded any time--and at the very time--that an offense is remembered. The offender may be a great distance away, may not be repentant, and may even be rejoicing in his sin planning more bad behavior. The offense may have occurred today, yesterday or many years ago. God's command is to forgive (release it to God) upon the instant of remembering the offense.
Thought: To rid yourself of angry feelings by the prayer of forgiveness is a provision of His goodness. He has provided a way that we need not carry feelings of anger within, that we need not store up offenses or suffer illnesses caused by stressful thinking and unforgiveness. The pressure to react sinfully to the offenses of others is taken away because we can choose to respond to the prayer in which we forgive.