Did "God" not know it was immoral 2000 years ago?
I don't know. We'll ask that on the next 3-way call...
Why ever did He provide instructions on how to handle slaves, where to get them and so on?
Where to get them is irrelevant. How to treat them was the point.
Hence, the god of the bible is not perfectly moral.
If you don't understand that slavery is immoral, and you're unwilling to see that instructions regarding slavery overtly - not tacitly - condones slavery, you utterly fail to understand morality.Because you know what "perfectly moral" is?
Your first line was flawed, hence the flaw of your last.
The worst part about your inability to understand morality is that you received this from your religion. Christianity has destroyed your ability to understand what is moral, what is misery, how your fellow human should be treated - how sad!
You need to talk to God to know what He - presumably a perfectly moral being - would not condone slavery?!? Seriously???
I've interviewed a young woman who was stolen from her family, raped and abused till she was broken, turned into a sex slave. She hates men, unreservedly, with all her heart, and fears them. Now, tell me that she would be made whole if only her slavers had access to an instruction manual.
I spit on your morality.