Atheists know nothing about the nature of God.
Guess what? Theists know nothing about it either. All they present is pure speculation, and their speculation does not conform with the observable facts.
Whatever God orders is not evil, even if it may appear so to us.
Yes, a standard reply, repeated ad nauseam. Millions and billions of actual events happen, which “seem” to be evil to us, but those are all “measurement errors”. Guess what? We must go by the data available to us. If God’s actions are justifyable, by all means, tell us about it, and we shall reconsider. Even better, let God come down and on trial. But don’t just appeal to our ignorance, because you are exactly as ignorant as we are.
Yes, we are not privy to God’s intentions, neither you, nor I. The same applies to Hitler’s, Stalin’s, Pol Pot’s intentions. You don’t know what their inner thought processes were. No one does. So we go by the available data, and say: “there is no visible justification for their actions, therefore we judge them accordingly, and declare that they were evil”. God does not get any preferential treatment, either. Justitia, the ancient goddes of justice is properly depicted with a blindfold, she does not look at the accused, her verdict is based upon the available information.
If it walks like a duck, quacks like a duck, tastes like a duck, looks like a duck, then it is very probably a duck.
God made the toddlers, therefore he can decide which toddlers live and which die.
Oh, yes, the good, old “might makes right” principle.
And did you think that death is the worst thing that can happen to us? It only is if there is nothing beyond physical death.
You are most welcome to present evidence, that this assumed “after-life” is real, and not just wishful thinking.

But even in that case it does matter, how one dies, what kind of suffering happens in this life. And no reward in some assumed after-life can retroactively justify the injusticies in this world.
The “wholesale” killing of the OT was ordered by God because he had passed judgment on them as a people. Do you think he doesn’t know the evils a culture can allow itself to wallow in?
There is no collective guilt. Only individual one.
The Church doesn’t claim infallibility for itself. Christ endowed it with that charism so it would stand unsullied through the centuries, bringing the Gospel to the world. It is of divine origin, not human origin, or the Church would have failed long ago. God has established the Church, not men. And whatever God establishes lasts as long as he says it will.
Oh, come on. The longevity means nothing. Also, it is not supported by objective evidence, only an old mythical book.
I see your issue isn’t biblical interpretation, but your own flawed reading of it.
Another staple answer. Of course those who disagree are always at fault. They are unable (read: stupid) or unwilling (read: stubborn) to swallow mindlessly whatever the “authority” happens to dish out.
I don’t interpret the Bible nor Sacred Tradition nor God’s will for mankind. I leave that to the Church which Christ established to do those things. Christ cannot be wrong, therefore his Church, which is his Body and of which he is the Head, cannot be wrong.
Well, good for you. You are in a big crowd, just like all those who cheered when the emperor displayed his new, magnificent clothing. However, the street urchins are not blinded, and they are happy to point out: “The emperor has no clothes!”.