Hi Frank,
Have a read of the link below, pretty much all nations in biblical times used slaves.
However God expected His people to treat their slaves better.
http://archive.churchsociety.org/crossway/documents/Cway_102_Slavery1.pdf
The Egyptians enslaved the Hebrews but when they escaped, God set out various
rules for having slaves, including the following. Slavery was a kind of job security
in bible times, or at least that's how I think it was intended to be. But it was
mankind who corrupted the intention and instead of job security, it became
wrongful confinement and ownership of a person. God was not pleased with
this as th following verses show.
Exodus 21:1-6,12 NKJV
[1] "Now these are the judgments which you shall set before them: [2] If
you buy a Hebrew servant, he shall serve six years; and in the seventh he
shall go out free and pay nothing. [3] If he comes in by himself, he shall go
out by himself; if he comes in married, then his wife shall go out with him.
[4] If his master has given him a wife, and she has borne him sons or daughters,
the wife and her children shall be her master's, and he shall go out by himself.
[5] But if the servant plainly says, 'I love my master, my wife, and my children;
I will not go out free,' [6] then his master shall bring him to the judges. He shall
also bring him to the door, or to the doorpost, and his master shall pierce his ear
with an awl; and he shall serve him forever. [12] "He who strikes a man so that
he dies shall surely be put to death.
Jeremiah 34:13-18 NKJV
[13] "Thus says the LORD, the God of Israel: 'I made a covenant with your
fathers in the day that I brought them out of the land of Egypt, out of the
house of bondage, saying, [14] "At the end of seven years let every man
set free his Hebrew brother, who has been sold to him; and when he has
served you six years, you shall let him go free from you." But your fathers
did not obey Me nor incline their ear.
[15] Then you recently turned and did what was right in My sight-every
man proclaiming liberty to his neighbor; and you made a covenant before
Me in the house which is called by My name. [16] Then you turned around
and profaned My name, and every one of you brought back his male and
female slaves, whom you had set at liberty, at their pleasure, and brought
them back into subjection, to be your male and female slaves.'
[17] "Therefore thus says the LORD: 'You have not obeyed Me in proclaiming
liberty, every one to his brother and every one to his neighbor. Behold, I
proclaim liberty to you,' says the LORD-'to the sword, to pestilence, and to
famine! And I will deliver you to trouble among all the kingdoms of the earth.
[18] And I will give the men who have transgressed My covenant, who have
not performed the words of the covenant which they made before Me, when
they cut the calf in two and passed between the parts of it-