I posted here on the Afterlife Knowledge Forum a couple weeks
ago :
http://www.afterlife-knowledge.com/cgi-bin/yabb/YaBB.cgi?board=afterlife_knowledge;action=display;num=1138917286
In cases of *identical* twins, because the physical body &
brain is genetically identical (after fertilization by a single
sperm with a single ovum, the resultant zygote for various
biochemical reasons split into two, both of which develop into
viable foetuses), and thus being vibrationally similar for the
occupying soul, it is a possible option (one that is sometimes, not
always, exercised), for the same human soul to occupy both bodies
at once.
Thus, in such a case, the two individuals would have the same soul
or higher self. Some souls might choose this (prerequiste being, of
course, there are suitable upcoming identical twin biological
bodies, whose upcoming life/lives present an appropriate karmic
option for the soul in question, in terms of karmic connection with
family members, compatibility with the soul's existential program
or planned objectives for the lifetime), because to the soul, it
means greater opportunity to accomplish learning and work within
the same amount of time, akin to multi-tasking.
Extremely rarely (though theoretically possible, but not
practically advisable), does a single human soul incarnate
simultaneously into two or more physical bodies, because of the
increased difficulty or challenging nature, for the higher self or
soul to simultaneously operate or function as two individuals at
once (note that we're referring to the level of the individual
soul, not the oversoul or disk/disc level). But in the case of
genetically identical twins, this becomes less strenous for the
soul to do so, and thus, it becomes more feasible of an
option.
Obvious advantages to simultaneously incarnating as identical
twins, would be gaining more experience, furthering more
relationships, getting more karmic work done, within the same
lifetime span.
Note that this is only an option, which is in practice, rarely
exercised. Certainly not all genetically identical twins have the
same soul or higher self. But in cases in which genetically
identical twins might have curious synchronicities, for instance
both experience events with great personal or emotional
significance at around the same time, or discarnate/depart from the
physical at round the same time, and other such coincidences that
goes beyond normal telepathy or psychic attunement.
In such cases which might seem otherwise enigmatic to the observer,
understanding the possibility or mechanism of identical twins
having the same soul or higher self, will allow for greater
intuitive understanding on the curious synchronicities.