Once we have learned about the divine design, we can understand that we were created to become angels because the ultimate boundary of that design is found in us (Section 304), which means that in us the substance of heavenly and angelic wisdom can take form and can be restored and multiplied. The divine design never comes to rest part way, forming something without a boundary: that is not the design in its fullness and perfection. Rather, it presses on to its ultimate boundary, and when it has reached that limit it takes form; and then by means that it gathers on that level it restores itself and produces more, which is accomplished by procreation. This is why the seedbed of heaven is on this lowest level.
The reason the Lord rose not only in respect to his spirit but in respect to his body as well is that when the Lord was in the world, he glorified his whole human nature—that is, he made it divine. In fact, his soul, which he received from the Father, was essentially the Divine itself, and his body became an image of that soul (that is, of the Father) and therefore also divine. This is why he, unlike anyone else, rose in both spirit and body. He showed this to his disciples—who believed they were seeing a spirit when they saw him—by saying, “Look at my hands and my feet, that it is I myself. Touch me and see, for a spirit does not have flesh and bones as you see that I do” (Luke 24:36–38 [24:39]). In this way he pointed out that he was not a person in spirit only, but in body as well.
To let people know that we live after death, and that then we come into either heaven or hell depending on our lives, I have been shown a great deal about our state after death that will be presented in sequence below when we come to a description of the world of spirits.
from Heaven and Hell, Sections 315-317