Scripture plainly teaches that there are two kinds of anger, righteous and unrighteous. In verse 31 ‘anger’ is one of a number of unpleasant things which we are to ‘put away’ from us. Evidently unrighteous anger is meant. But in 5:6 we are told of the anger of God which will fall on the disobedient, and we know that God’s anger is righteous. So was the anger of Jesus [Mark 3:5]. There must therefore be a good and true anger which God’s people can learn from him and from their Lord Jesus. I go further and say that there is a great need in the contemporary world for more Christian anger. We human beings compromise with sin in a way in which God never does. In the face of blatant evil, we should be indignant, not tolerant; angry, not apathetic. If God hates sin, His people should hate sin, too. If evil arouses His anger, it should arouse ours, too. ‘Hot indignation seizes me because of the wicked, who forsake thy law [Ps. 119:53].’ What other reaction can wickedness be expected to provoke in those who love God?

"A man may be theologically knowing and spiritually ignorant." STEPHEN CHARNOCK