It is a sin to get angry?

In one word? No! There are times when it is acceptable for a Christian to live what we euphemistically call “indignation”. But what is it that makes our righteous anger?

Even Jesus got angry on occasion. In Marco 11:15-17 we see it in a moment of anger, against vendors and traders selling in the Temple of Jerusalem, overturning tables and chairs:

They came to Jerusalem, and Jesus, He entered the temple, He began to drive out those who sold and bought in the temple; He overthrew the tables of the money changers and the benches of those selling doves; and would not allow anyone to carry anything through the temple. And he taught, telling them: «It is not written: “My house shall be called a house of prayer for all nations?” But ye have made it a den of thieves».

Another time he was indignant when the religious rulers set a trap, to see if it would heal a man on the sabbath day:

And he entered again into the synagogue; there was a man who had a paralyzed hand. And they watched him, whether he would heal on the sabbath day, to accuse him. He said to the man paralyzed hand: "Get up there in the middle!"Then he asked them,: "It allowed, the sabbath day, do good or to do harm? Save a life or to destroy?»But they held their peace. then Jesus, looked around at them with anger, grieved for the hardness of their hearts, He told the man: "Stretch out your hand!"He stretched it out, and his hand was restored. (Marco 3:1-5)

In these two anecdotes, we see that the wrath of Jesus was not self-directed, He did not do it for himself, but to defend the sanctity of the temple of the Father in the first case, and to help a sick person in the second case. And he was also outraged that another human suffering was being used as a pawn for selfish political gain. Jesus was angry when the children were neglected or abused, He got angry with the lack of faith of the disciples because of their pride and insatiable ambition.

E November? We are not Jesus! But our anger must be directed in protest against evil, towards the protection of the fragile, against tyranny and abuse, against abortion, against the cruelties of all kinds, as well as against false doctrines and against liberalism of today or against atheism. We also need to be angry with the laws and to fight anti-Christian. We must be angry when the Kingdom of God is attacked. We must not stand impassively watching. We must always preach the truth publicly, whatever it takes.

Two additional points. Even when our anger is justified, it must be temporary and should subside quickly, we should not live in anger! The apostle Paul is a saint who seems to have been a temperamental man who got angry often, He gives advice to his fellow Christians in Ephesus:

Adiratevi e non peccate; let not the sun on your anger, and do not give place to the devil. (Ephesians 4:26-27)

So there is a kind of anger that is not sinful. But his next words speak for themselves: “let not the sun on your anger, and do not give place to the devil”. When we grudge and we continue to have it in our hearts we give Satan an easy way for our souls. The basis of everything is faith, with it you can all.

And this is the second point. If we have a mighty Saviour who won the world, you can relax. If someone in our lives is really directed toward evil, Jesus will take care of him. In Luca 17, Jesus tells his disciples to forgive an enemy seven times seven times as many if the offender in a day:

Beware yourself! If your brother sins, rebuke; and if he repents, forgive him. If he sins against you seven times a day, and seven times comes back to you and tells you: “I repent”, forgive him".
(Luca 17:3-4)

The disciples immediately responded: “lord, increases our faith!” What is the connection between faith and our emotions? simply this: confidence omnipotence of God who allows his children to let go of their anger but to pass it now and do not be angry with your neighbor.