'Slaves' in the Bible

The men were afraid, because they were brought to Joseph's house; and they said, "Because of the money that was returned in our sacks at the first time, we're brought in; that he may seek occasion against us, attack us, and seize us as slaves, along with our donkeys."

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.

Now there cried a certain woman of the wives of the sons of the prophets to Elisha, saying, "Your servant my husband is dead. You know that your servant feared Yahweh. Now the creditor has come to take for himself my two children to be slaves."

The tree of the field shall yield its fruit, and the earth shall yield its increase, and they shall be secure in their land; and they shall know that I am Yahweh, when I have broken the bars of their yoke, and have delivered them out of the hand of those who made slaves of them.