I suggest that unique waves never return, but rather the ocean continues waving. The ocean is waving in you now.
Is the body an essential part of our true Self? Or is it like a temporary temple for the Divine to live?
Did we live before this life? Many religions say so, secular minds often say no, but could there be validity to both?
I think that Christianity may have conflated Jesus's mystical experience of an ego death, perhaps at the time of his baptism when the "heavens opened," in which his individual psychological self "died" and he was was "reborn" of Spirit, or "raised up" (resurrected) to his identity in Christ consciousness (a consciousness of nondual union in God/Reality), with his biological death on the cross. These two deaths seem to have been conflated at some point, resulting in a supernatural conception of the resurrection.