What does Leviticus 25:47 mean?

And if a stranger or sojourner with thee be waxed rich, and thy brother be waxed poor beside him, and sell himself unto the stranger or sojourner with thee, or to the stock of the stranger’s family;

And if a sojourner or stranger wax rich by thee, and thy brother that dwelleth by him wax poor, and sell himself unto the stranger or sojourner by thee, or to the stock of the stranger’s family:

And if a stranger or sojourner with thee be waxed rich, and thy brother be waxed poor beside him, and sell himself unto the stranger or sojourner with thee, or to the stock of the stranger’s family;

And if one from another nation living among you gets wealth, and your countryman, at his side, becomes poor and gives himself for money to the man from another nation or to one of his family;

`And when the hand of a sojourner or settler with thee attaineth <FI>riches<Fi> , and thy brother with him hath become poor, and he hath been sold to a sojourner, a settler with thee, or to the root of the family of a sojourner,

If the hand of a stranger or a sojourner grow strong among you, and thy brother being impoverished sell himself to him, or to any of his race:

And if a stranger or sojourner become wealthy beside thee, and thy brother beside him grow poor, and sell himself unto the stranger, who is settled by thee, or to a scion of the stranger's family,