Anger means a strong feeling of displeasure or hostility
Ephesians 4:26 be angry and do not sin; let not the sun go down upon your wrath,
27 neither give place to the devil;
28 whoso is stealing let him no more steal, but rather let him labour, working the thing that is good with the hands, that he may have to impart to him having need.
29 Let no corrupt word out of your mouth go forth, but what is good unto the needful building up, that it may give grace to the hearers;
30 and make not sorrowful the Holy Spirit of God, in which ye were sealed to a day of redemption.
31 Let all bitterness, and wrath, and anger, and clamor, and evil-speaking, be put away from you, with all malice,
32 and become one to another kind, tender-hearted, forgiving one another, according as also God in Christ did forgive you.
Mark 3:3 And he entered again into the synagogue; and there was a man there which had a withered hand.
2 And they watched him, whether he would heal him on the sabbath day; that they might accuse him.
3 And he saith unto the man which had the withered hand, Stand forth.
4 And he saith unto them, Is it lawful to do good on the sabbath days, or to do evil? to save life, or to kill? But they held their peace.
5 And when he had looked round about on them with anger, being grieved for the hardness of their hearts, he saith unto the man, Stretch forth thine hand. And he stretched it out: and his hand was restored whole as the other.
6 And the Pharisees went forth, and straightway took counsel with the Herodians against him, how they might destroy him.
7 But Jesus withdrew himself with his disciples to the sea: and a great multitude from Galilee followed him, and from Judaea,
Matthew 21:12 And Jesus went into the temple of God, and cast out all them that sold and bought in the temple, and overthrew the tables of the moneychangers, and the seats of them that sold doves,13 And said unto them, It is written, My house shall be called the house of prayer; but ye have made it a den of thieves.
Here anger had a little more hostility involved. These people harmed other people. They were cheating and forcing people to buy items in order to worship God. They were disgracing God’s temple. Jesus ran them out.
I think, and this is just me thinking, that some times we may have to resort to strong action. When we are called on to to protect someone.
Anger is not wrong, but as a person, I am not capable of knowing when to act or how to act without the direction of the Holy Spirit. We need to slow down the minute anger arrives and ask God to guide us with His Spirit. I personally am more likely to be angry for selfish reasons and to act in unchristian ways. I even can find myself proud of the harm I cause when I act in anger. No, I am not capable of responding properly when anger is involved. I have to have guidance.
Anger needs to come with a big label.
Caution Pray before Acting and Handle only with Holy Spirit supervision.