Let me comment on each of our readings. The first reading outlined the highly unique rules for jubilee years among the Israelites. Back when the twelve tribes were preparing for their conquest of the Promised, Joshua sent in knowledgeable men to survey the whole of the Promised Land, instructing them to divide the future homeland into twelve tracts of land of equal value.
Then, Joshua blindfolded the leaders of the tribes, having had the leaders of each of the tribes to select the tract of land that would belong to their tribe forever. Next, Joshua instructed the leaders of each family in each of the tribal lands to blindfolded select the tract of land that would belong to that family forever. Through the years and centuries land owners sold or traded away their tribal and family lands, but at every Jubilee Year the tribal lands and the family land reverted to their original owners.