'Slaves' in the Bible

For they are my servants, whom I brought forth out of the land of Egypt. They shall not be sold as slaves.

"'As for your male and your female slaves, whom you may have; of the nations that are around you, from them you may buy male and female slaves.

You may make them an inheritance for your children after you, to hold for a possession; of them may you take your slaves forever: but over your brothers the children of Israel you shall not rule, one over another, with harshness.

I am Yahweh your God, who brought you forth out of the land of Egypt, that you should not be their slaves; and I have broken the bars of your yoke, and made you go upright.