I think the knowledge of good and evil is the knowledge of DO'S AND DON'TS.
It is seeking to know all that is good in order to do good in our fleshly power, and seeking to know all that is evil in order to avoid it in our fleshly power. IT IS ESSENTIALLY LAW KEEPING.
Is that a bad thing?
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Hebrews 13:23 Know ye that our brother Timothy is set at liberty