Or was it men, using God to justify their blood lust?
I'd go with the latter.
Humans wrote the Bible, the Koran, the Tao Te Ching.
"God" gave us discernment and wisdom. We need to separate the wheat from the chaff, the light from the dark ..
If you understand, things are just as they are; if you do not understand, things are just as they are.
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