Question

Hello Rabbi,
How do you think one should properly understand promises of life in the World to Come that appear in our sources, for example:
 
Maimonides, Laws of Kings, chapter 5
The sages said: Whoever dwells in the Land of Israel has his sins forgiven, as it is said, “And no inhabitant will say, ‘I am sick’; the people who dwell there will be forgiven their iniquity.” Even if one merely walks four cubits in it, he merits life in the World to Come. Likewise, one who is buried there attains atonement, and it is as though the place where he is serves as an altar of atonement, as it is said, “And His land will atone for His people.” And regarding punishment it says, “On impure soil you shall die.” Still, being received by it while alive is not like being received by it after death. Even so, great sages would bring their dead there. Go and learn from our forefather Jacob and from the righteous Joseph.