I don’t accept that. If there is any meaning to the concepts of “good”, “benevolent”, “just”, merciful", etc. they must be applied equally to everyone. The ancient Romans did have a saying: “Quod licet Iovi, non licet bovi”, but I deny the validity of such notions
Then we cannot discuss the concept of good in this context. The Christian concept of God is harmonious with the philosophies developed by the Greeks and generally adopted by most monotheists. If God wouldn’t have the same nature as already accepted you have to specify this so we can agree on what concept of God is being discussed. Otherwise you are shaping the concept of God to fit the criteria you require to prove that God doesn’t exist
The funny thing is that believers assert the existence of absolute categories (like absolute morality) and then immediately deny the same ideas as soon as they are applied to God. Very ironic, and in my eyes highly hypocritical. To say that genocide in a horrible, immoral act - when performed by humans; and perfectly acceptable when ordered (or performed) by God is simply ridiculous.
It’s you who fails to apply the absolutes. God as creator of good is good absolutely. The absolute good is not apprehendable by beings relative to it without being revealed by the being that is absolute. This isn’t just Christian thought but the thought developed about the nature of God as creator of all that is.