The Devil or Satan is introduced in the Garden story. The Garden of Eden was written allegorically. Satan was also a symbolic creation. In the Garden allegory, Satan is confined to the earth which means the physical world, specifically he is doomed to slither along the ground. The physical world is the world where physical man resides. Later in the allegorical story, man is given dominion over all living things including that which crawls or slithers along the ground. However you define Satan or evil(defining and naming things is our job too), its all on us.

Have you read Epicurus' Dilemma? The evil spoke of in this poem / quote is about natural disasters. Of course, if you don't think religion has any value, then gods and devils don't exist, only man's evil to himself and his environment.

Free will....wait....mankind created god(s) in our own, human imagine with our own human faults & foibles because we needed a way to explain natural phenomena that was, at the time, beyond our understanding & it was scary. We kept god(s) around because humankind is inherently weak & needs a reason/excuse/scapegoat for when we fuck up (the devil made me do it) instead of taking accountability. The powers that be saw religion was an excellent control mechanism for the unwashed masses & made it a cultural pillar to keep them chained in obedience & threstened with loss of heaven. Hopefully, those chains are weakening.

there you go trying to use logic to explain bullshit