The God of Eclipse was a notoriously evil god. It was not because his divine power was strong or his deity was at the highest level, but because his doctrine and slogan were very powerful. He called on his followers to gather their strength silently and then overthrew the society, the governance, and the world at the critical moment. He devoted himself to the great affairs of destroying the sun and the world.
There were many good gods and evil gods in the pantheon temple, but as a non-powerful god, the God of Eclipse's slogan was so well-known that he was considered an anomaly.
It was not surprising that the God of Justice would pick up his axe and attack him. In fact, when he was chopped to pieces by the axe, there were at least two or three good gods with a hot temper that also picked up their weapons. If the God of Justice did not attack the God of Eclipse first, there were many other gods ready to do it.