'Buy' in the Bible

by the number of years after the jubilee thou dost buy from thy fellow; by the number of the years of increase he doth sell to thee;

And thy man-servant and thy handmaid whom thou hast are of the nations who are round about you; of them ye buy man-servant and handmaid,

and also of the sons of the settlers who are sojourning with you, of them ye buy, and of their families who are with you, which they have begotten in your land, and they have been to you for a possession;