I believe there is a God whom I call my Heavenly Father and he has a Son named Jesus Christ who is my personal Savior. You can learn for yourself that there is a God by following your doctor's suggestion - read the Bible. I would say perhaps it might be wise to begin by reading the First Gospel of Matthew. I believe that God is the same for all mankind - no matter what faith is practiced. There surely are spirits as we ourselves are spirit. When we die we lay down our mortal body and our spirit returns to God. Please consider reading the scriptures - God's word - and if you do, you will come to find that indeed there is a God and your life will be changed.