We have to be honest here. The OT allowed slavery and allowed people to strike the slave. Plain and simple. God allowed it. If anyone uses these verses to reject Christ and the salvation offered then it is on his own head. Its not our job to defend God Or make,excuses for him. He is God we are not. As a believer in Jesus we are spiritually minded and have the mind of Christ. We proclaim the gospel and are under a New Covenant. The new covenant is different than the old. Blessed be the name of our Lord.
Like I said if someone wants to use the Old Covenant as a reason to reject Christ he will have no excuse on judgement day. For God is God.
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