I think you nailed this one!
HE didn’t say Sunday, HE said the Seventh Day (Sabbath). And I’m not an Adventist.
I’m not sure why it is so hard, but everyone seems to get stuck on some human’s rules, and violate YHVH’s rules. Ex 23:13 seems pretty clear that we are not to call the Almighty one by the names of heathen mighty ones,,,, like ‘god’.
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