Biblical Hebrew has two words relating to bequests: Morasha (מורשה), and yerusha (ירושה). Morasha, the Hebrew word for ‘possession’ in this verse, is generally translated as ‘heritage,’ while yerusha is translated as ‘inheritance.’ The use of different words suggests a difference in meaning. An inheritance is simply passed on from the previous generation, while a heritage requires the receiver’s active involvement and participation, like a family business which the founder’s children must work hard to maintain. An inheritance may be squandered; a heritage must be preserved intact for the next generation. This certainly explains why the verse uses the word morasha with regard to Eretz Yisrael. The land requires our active involvement to maintain and preserve it, and it is not ours to squander.