54 “ ‘Even if someone is not redeemed in any of these ways, they and their children are to be released in the Year of Jubilee,

Read Leviticus 25:54 Using Other Translations

And if he be not redeemed in these years, then he shall go out in the year of jubile, both he, and his children with him.
And if he is not redeemed by these means, then he and his children with him shall be released in the year of jubilee.
If any Israelites have not been bought back by the time the Year of Jubilee arrives, they and their children must be set free at that time.