God did not create evil.

P1. A thing has some amount of properties.
P2. Properties have ontology.
C1. Therefore, things have ontology.
P3. All things originate within God’s all-knowing mind.
P4. Goodness has ontology.
C2. Therefore, goodness is a thing.
P5. Evil (NOT-good) is the lack or negation of goodness.
C3. Therefore, whatever good is, evil is not. (IF going left = Good, THEN going NOT-left = NOT-Good)
C4. Therefore, evil has no ontology.
P6. God is the fullness of being; fullness then implies no absences or rather the absence of absence.
P7. God desires that humans know and love Him.
P8. Love and true knowledge require freedom of thought and will.
P9. Imperfect beings with free will can reject truth and thus good, producing evil by definition. (See "Truth is Good" below for why it’s the case that truth is good.)
P10. Perfect beings with free will do not reject truth and thus cannot produce evil.
C5. Therefore, the possibility of evil exists only for free, imperfect beings.
C6. Therefore, God is not the originator of evil but only of good (which exists fully in Him).
C7. Therefore, although imperfect beings originated evil, they did not create any new ontological reality apart from God—evil is merely the absence of good, not a created substance.


Truth is Good: https://pastebin.com/fbLirZqh