'Slaves' in the Bible

Blessed [are] those slaves whom the master will find on the alert [when he] returns! Truly I say to you that he will dress himself for service and have them recline at the table and will come by [and] serve them.

But if that slave should say {to himself}, 'My master is taking a long time to return,' and he begins to beat the male slaves and the female slaves and to eat and drink and get drunk,

But [his] father said to his slaves, 'Quickly bring out the best robe and put [it] on him, and put a ring on his finger and sandals on [his] feet!

And he summoned one of the slaves [and] asked what these [things] meant.

Thus you also, when you have done all the {things you were ordered to do}, say, 'We are unworthy slaves; we have done what we were obligated to do.'"

And summoning ten of his own slaves, he gave them ten minas and said to them, 'Do business {until I come back}.'

And it happened that when he returned [after] receiving the kingdom, he ordered these slaves to whom he had given the money to be summoned to him, so that he could know what they had gained by trading.