There are perhaps as many different theological approaches to the notion of an afterlife as there are religions. Atheists and certain polytheists claim the end of life is complete dissolution. For some ancients, and to a degree, the French philosophy of unanism, one only survives death as a memory, and when the last memory of you by other people disappears in when your death, in terms of your effect on the world, ends. Jules Romain's Death of a Nobody expands on this idea in fictional form. At the opposite extreme, Islam and certain branches of Christianity posit that one is revived in a new body and rewarded or suffered. Many eastern religions posit transmigration of souls or reincarnation. Philosophical theologians in both eastern and western tradition argue that the soul persists but perhaps loses individual identity and becomes radically different, perhaps returning to its divine origins.
First of all their is life after death and i can prove to you how through logic.Take an example of hitler he killed thousands of people and didnt face the consquences and got away with it! . Believe me he will pay the price of his deeds in this world in the here after.
Many different religions believe in life after death for eg chritianity,islam,hinduism etc.Even at the time of pharoahs they used to have a concept of life after death.