There is no objective evil, rather the recognition of our corruption shows us the opposite of the Creator and this is what is called evil. The Creator only does good, it’s our disconnection from that which shows us a different reality.
The recognition of evil is just as it sounds, it shows us what we have as our nature whereas before it was concealed from us which soon prompts us to ask for correction. Before recognition of evil, there’s as if no correction to ask for.