His word is absolute. God says some things are wrong and bad. He says others things are good and right. These do not change. They are not good for some and bad for others. They are immutable.
It is wrong for me to kill (murder). In fact, Jesus says even anger, that is not righteous, is a sin.
It is wrong for me to steal, even if I take those ‘gains’ and give them to the poor or to the church.
His word is absolute. He speaks plainly through it and it is easily understandable.
What do you use to determine the righteousness of anger?