All: He did not.
“Slavery was incorporated into the civil institutions of Moses; it was recognized accordingly by Christ and his apostles.”—Rev. Dr. Nathan Lord, President of Dartmouth College.
“At the time of the advent of Jesus Christ, slavery in its worst forms prevailed over the world. The Savior found it around him in Judea; the apostles met with it in Asia, Greece and Italy. How did they treat it? Not by denunciation of slave-holding as necessarily sinful.”—Prof. Hodge of Princeton.
“I have no doubt if Jesus Christ were now on earth that he would, under certain circumstances, become a slaveholder.”—Rev. Dr. Taylor of Yale.
Rousseau says: “Christ preaches only servitude and dependence.... True Christians are made to be slaves.”
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What did the apostles teach?
Peter: “Servants [slaves], be subject to your masters with all fear; not only to the good and gentle, but also to the froward” ([1 Peter ii, 18]).
Paul: “Let as many servants [slaves] as are under the yoke count their own masters worthy of all honor” ([1 Timothy vi, 1]). “Servants, be obedient to them that are your masters according to the flesh, with fear and trembling” ([Ephesians vi, 5]).