Leviticus 25:29-38

‘If a man sells a house in a walled city, then his right of redemption remains valid for a full year after its sale; his right of redemption lasts a full year. But if it is not redeemed for him within a full year, then the house that is in the walled city passes permanently and irrevocably to the purchaser throughout his generations. It does not revert back in the Year of Jubilee. The houses of the villages that have no surrounding walls, however, shall be considered as open fields. They may be redeemed, and revert in the Year of Jubilee. As for the cities of the Levites, the Levites have a permanent right of redemption for the houses in the cities which they possess. Therefore, what is [purchased] from the Levites may be redeemed [by a Levite], and the house that was sold in the city they possess reverts in the Year of Jubilee, for the houses in the Levite cities are their [ancestral] property among the Israelites. But the pasture lands of their cities may not be sold, for that is their permanent possession. ‘Now if your fellow countryman becomes poor and his hand falters with you [that is, he has trouble repaying you for something], then you are to help and sustain him, [with courtesy and consideration] like [you would] a stranger or a temporary resident [without property], so that he may live among you. [1 John 3:17] Do not charge him usurious interest, but fear your God [with profound reverence], so your countryman may [continue to] live among you. You shall not give him your money at interest, nor your food at a profit. I am the LORD your God, who brought you out of the land of Egypt to give you the land of Canaan and to be your God.