The 10 Commandments dont mention slavery or treating people as equals.
Matthew 22:36-40 New International Version (NIV)
36 “Teacher, which is the greatest commandment in the Law?”
37 Jesus replied: “‘Love the Lord your God with all your heart and with all your soul and with all your mind.’[a] 38 This is the first and greatest commandment. 39 And the second is like it: ‘Love your neighbor as yourself.’[b] 40 All the Law and the Prophets hang on these two commandments.”
Footnotes:
- Matthew 22:37 Deut. 6:5
- Matthew 22:39 Lev. 19:18
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Jesus is quoting Moses.
And not to a Jew He doesn’t.