28 But if the original owner cannot afford to buy back the land, it will remain with the new owner until the next Year of Jubilee. In the jubilee year, the land must be returned to the original owners so they can return to their family land.

Matthew Henry's Commentary on Leviticus 25:28

Commentary on Leviticus 25:23-34

(Read Leviticus 25:23-34)

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.