17-Year-Old Trans Teen Found Burned With Signs of Strangulation in Sugarcane Field
(www.transunitedfund.com)
Wrong, he's explicitly condoning slave-owning and slave-beating. The bible does this multiple times.
Jesus could have used any other example. He chose slave-beating because it was the norm at the time (because he himself chose for that to be the case, if you believe he is god and god is all-powerful) and because it's a direct comparison for the complete submission he demands under threat of violence.