I'm not a christian, but I grew up in a Baptist household, so I have at least a passing understanding of the Bible. Lemme know if I got any wrong.
If I'm understanding the bible correctly;
God Created heaven and Earth, Including Mankind and Angels
God is all-knowing and all-powerful
Relevant to this discussion, God created Lucifer and all the angels who sided with him.
God made Man in His image, and ordered the angels to serve them.
Lucifer, prideful of his own beauty, and envious of God's (at least perceived) favoritism of Man, and of God's position, started a rebellion in heaven and was/will be cast down into the lake of fire(aka Hell).
lucifer later tempted/took the form of the Serpent in the Garden of Eden and tempted Eve to eat of the Tree of Knowledge.
my conclusion: God, with full knowledge of what lucifer would do/become created him and set him on the path that led to his downfall, and to the Sin of Mankind.
Or to put it more simply; God created Sin through his foreknowledge of what Lucifer would become.
I'm not trying to start a shitstorm here, but this is the logical conclusion that I find myself at.
Any Christian pedes wanna poke holes in this for me?
Yes God created an originally good angelic being who chose to sin and God knew it would happen. In a broad way, from a 40,000+ft view a conclusion can reasonable be drawn that God created sin along with every single possible outcome of ever choice of every human throughout all of humanities existence. But we don't look at all those but we humans wrestle just with sin? God created an angelic person who sinned and then through deception and an irresponsible social desicion got humanity seperated from its creator. To draw the connection that God is responsible for sin, as the creator of everything while having foresight, is then to remove the responsibly of the consequences from the devil and from us who have actually done the sin and throw them back at God. Do we do this with the good things or just the sin though? If we were consistent we should be honoring Him 24/7 for oxygen and water and everything else we have done for ourselves that we need. But sin bothers us and we know we need to do something about it were all the good stuff we need we can convince ourselves we deserve all that... this is like a fat guy blaming a blue collar worker who makes ice cream stand spoons for making him fat though when the problem is personal responsibility. The crazy part though is not the sin issue it's that the same God would willingly die in offering to restore the relationship humanity broke.