30 And if it be not redeemed within the space of a full year, then the house that is in the walled city shall be established for ever to him that bought it throughout his generations: it shall not go out in the jubile.
English Standard Version
30 If it is not redeemed within a full year, then the house in the walled city shall belong in perpetuity to the buyer, throughout his generations; it shall not be released in the jubilee.
30 But if it is not redeemed before the full year has passed, it becomes the permanent possession of the buyer and his descendants. It is not returned in the Jubilee.
New King James Version
30 But if it is not redeemed within the space of a full year, then the house in the walled city shall belong permanently to him who bought it, throughout his generations. It shall not be released in the Jubilee.
New Living Translation
30 But if it is not bought back within a year, the sale of the house within the walled town cannot be reversed. It will become the permanent property of the buyer. It will not be returned to the original owner in the Year of Jubilee.
If the land were not redeemed before the year of jubilee, it then returned to him that sold or mortgaged it. This was a figure of the free grace of God in Christ; by which, and not by any price or merit of our own, we are restored to the favour of God. Houses in walled cities were more the fruits of their own industry than land in the country, which was the direct gift of God's bounty; therefore if a man sold a house in a city, he might redeem it only within a year after the sale. This encouraged strangers and proselytes to come and settle among them.