It was accepted for Jews to buy slaves. And I think it is fine. If the other nations are so evil that they are willing to sell their own people, I think it is good, if they are bought by Jews that are not allowed to sell own people and have good rules for life. But I think it is also good to notice this:
The word that came to Jeremiah from Yahweh, after that the king Zedekiah had made a covenant with all the people who were at Jerusalem, to proclaim liberty to them; that every man should let his man-servant, and every man his maid-servant, who is a Hebrew or a Hebrewess, go free; that none should make bondservants of them, to wit, of a Jew his brother. All the princes and all the people obeyed, who had entered into the covenant, that everyone should let his man-servant, and everyone his maid-servant, go free, that none should make bondservants of them any more; they obeyed, and let them go: but afterwards they turned, and caused the servants and the handmaids, whom they had let go free, to return, and brought them into subjection for servants and for handmaids. Therefore the word of Yahweh came to Jeremiah from Yahweh, saying, At the end of seven years you shall let go every man his brother who is a Hebrew, who has been sold to you, and has served you six years, you shall let him go free from you: but your fathers didn't listen to me, neither inclined their ear. You were now turned, and had done that which is right in my eyes, in proclaiming liberty every man to his neighbor; and you had made a covenant before me in the house which is called by my name: but you turned and profaned my name, and caused every man his servant, and every man his handmaid, whom you had let go free at their pleasure, to return; and you brought them into subjection, to be to you for servants and for handmaids. Therefore thus says Yahweh: you have not listened to me, to proclaim liberty, every man to his brother, and every man to his neighbor: behold, I proclaim to you a liberty, says Yahweh, to the sword, to the pestilence, and to the famine; and I will make you to be tossed back and forth among all the kingdoms of the earth.
Jeremiah 34:8-17
And:
Therefore whatever you desire for men to do to you, you shall also do to them; for this is the law and the prophets.
Mat. 7:12
Even if they are allowed to own, I believe anyone who follows Jesus, would allow people to be free.
