> I have a hard time wrapping my head around exactly what it is that Christians believe about immortality
From the Christian perspective immortality is less limited than mortality. In mortality people are limited by the physical limitations of their bodies, thinking capacity, and the worldly environment in which they operate. Beyond that Christians cannot precisely describe immortality because knowledge and/or memories of that, or anything else, do not accompany the soul into the mortal world. All Christians can know is a limited set of opportunities described in religious scripture. Everything else in mortality descends from agency and accountability.
From the Christian perspective immortality is less limited than mortality. In mortality people are limited by the physical limitations of their bodies, thinking capacity, and the worldly environment in which they operate. Beyond that Christians cannot precisely describe immortality because knowledge and/or memories of that, or anything else, do not accompany the soul into the mortal world. All Christians can know is a limited set of opportunities described in religious scripture. Everything else in mortality descends from agency and accountability.