'Buy' in the Bible

If you make a sale to your fellow citizen or buy from your fellow citizen, no one is to wrong his brother.

You may buy it from your fellow citizen according to the number of years since the last jubilee; he may sell it to you according to the years of produce that are left.

"'As for your male and female slaves who may belong to you -- you may buy male and female slaves from the nations all around you.

Also you may buy slaves from the children of the foreigners who reside with you, and from their families that are with you, whom they have fathered in your land, they may become your property.