Kagloo
Jesus came from heaven, which is not a place but a state of consciousness.
There is only one son, and we are all part of that sonship. We are all one, with God and with each other. Jesus came to help restore that sense of oneness. "The things that I do, shall ye do also, and greater things shall ye do...".Jesus is still here, just vibrating on a higher frequency. He is still communicating with those who are willing to tune up to that higher frequency. Check out Budda, Krishna, Laotze, A Course in Miracles.
Of course you have had a spiritual existence before life on this plane. You just don't remember. You will have a life after this one as well. Part of the price for admission on this plane is that we we forget who and what we really are. How else can we pretend to be doing our own thing? Jesus came for a different purpose so did not block that awareness. God made you perfect, whole, and complete. Do you really think you can change that? Stop thinking of yourself as a flesh body. You are so much more! You have enrolled in a crash course in spiritual development. You can drop the class or sleep through it but, if you do, you will have to repeat it. However, we will complete the course eventually. There are no failing grades.