Be angry, and do not sin. PHESIANS 4:26
You might be surprised to hear that there is such a thing as righteous anger—that is, being angry over what grieves God and hinders His causes. But we are not to be so angry that it results in sin.
Don’t be angry for your own causes. Don’t get angry when people offend you. And don’t let your anger degenerate into personal resentment, bitterness, sullenness, or moodiness. That is forbidden. The only justifiable anger defends the great, glorious, and holy nature of our God.
Anger that is selfish, passionate, undisciplined, and uncontrolled is sinful, useless, and hurtful. It must be banished from the Christian life. But the disciplined anger that seeks the righteousness of God is pure, selfless, and dynamic. We ought to be angry about the sin in the world and in the church. But we can’t let that anger degenerate into sin.