It is a mistake when Christian theologians explain evil in terms of God's gift of free will.
Because free will is not a cause of evil.
I mean: free will is not even potentially a cause of evil.
Evil comes from evil: evil acts come from an evil nature.
A good Man would be free, but would do no evil.
Proof?
Jesus Christ: He was free and did not evil.
If Men also had good natures, Men would freely do only good.
Therefore the cause of evil is the nature of things; the cause of evil in Men is the evil nature of Men.
If, therefore, you believe that God created everything from nothing (ex nihilo) - including Men - then this entails that God must have created the nature of Men capable of evil.
(This has nothing to do with free will. Free will does not come into it.)
But since God really-is wholly good, and also Men obviously do evil - then it follows that God did Not create Men from nothing.
The evil that is in Mens' nature is not of God.
Thus there is something within Men that is not of God.
Conclusion: Men are not wholly created by God.
(And the notion that God created everything from nothing is refuted.)