Our guardian angels will be present during the time when our souls will exit this world and abandon the material body. They will be there at the moment to offer us solace and support during that transition and then help us adjust to the realms of the spirits when our soul will be directed toward God. It will be at that point that the soul will become conscious of its eternal condition.
The first mystery is simply that there is a Mystery. A Mystery that can never be explained or understood. Only encountered from time to time. Nothing is obvious. Everything conceals something else...Spiritual awareness is born of encounters with the Mystery.