LORD: "You shall inherit the land by lot according to your families; to a large tribe you shall give a large inheritance, and to a small tribe you shall give a small inheritance. wherever the lot falls to any man, that shall be his; according to the tribes of your fathers you shall inherit." (Num 33:54, Num 26:52-56)
LORD: "When a stranger sojourns with you in your land, you shall not do him wrong. The stranger who sojourns with you shall be to you as the native among you, and you shall love him as yourself; for you were strangers in the land of Egypt." (Lev 19:33, Eze 47:21-23)
LORD: "And you shall hallow the fiftieth year, and proclaim liberty throughout the land to all its inhabitants; it shall be a jubilee for you, when each of you shall return to his property and each of you shall return to his family ...." (Lev 25:10)
"In this year of jubilee each of you shall return to his property. And if you sell to your neighbour or buy from your neighbour, you shall not wrong one another. According to the number of years after the jubilee, you shall buy from your neighbour, and according to the number of years of crops he shall sell to you. If the years are many you shall increase the price, and if the years are few you shall diminish the price, for it is the number of the crops that he is selling to you. You shall not wrong one another, but you shall fear your God;..." (Lev 25:13-17)
"If a man sells a dwelling house in a walled city, he may redeem it within a whole year after its sale; for a full year he shall have the right of redemption ..."(Lev 25:29)
"If your brother becomes poor, and sells part of his property, then his next of kin shall come and redeem what his brother has sold. If a man has no one to redeem it, and then himself becomes prosperous and finds sufficient means to redeem it, let him reckon the years since he sold it and pay back the overpayment to the man to whom he sold it; and he shall return to his property. But if he has not sufficient means to get it back for himself, then what he sold shall remain in the hand of him who bought it until the year of jubilee; in the jubilee it shall be released, and he shall return to his property." (Lev 24:25-28) (NOTE: Land is not sold forever, land right will be reverted to its owner at the Jubilee Year.)
(NOTE: There are 12 tribes in Ancient Israel, and Israels is divided into 12 portions, one portion for one tribe, see Joshua 13,14,15,... For our present-day multi-racial society, we may have similar things: China Town, India Town, Japan Town, England Town, etc.)