God is good all the eternity.

Are you sure? He does not stop people from killing each other in his names.
6 million of Jesus's compatriots were gased to death by Jesus followers. Does Jesus give a fuck? No. Why not? Because myths cannot stop killings.
Only rational people can stop it.
Evil people always use religion for their own purposes. This is evidenced by history, and at the same time, God does not participate here. Faith and God only in the soul of man and this is purely personal. Otherwise we can cite an example of a crusade or even the actions of the Inquisition.
Religion was created by evil people to achieve their goals and control other naive people.
Religion was created by God to get as many people to be saved as possible. Over the ages, people have warped the good religion of God.

Why God needs religion to "save" people? If he created everything and rules the world, he can just do whatever he wants and that includes "saving" people.
Not sure from what, but whatever....it is your logic, not mine.
Religion has nothing to do with God. It was created by people in order to manage them. People themselves will determine what is evil and what is good. And God as a single beginning is both good and evil