There can be found many defects in believes of people in the age of ignorance, particularly in their most fundamental ones, i. e. God and hereafter. Denying man's life after death and knowing him of only earthly life has been a case of the defects. This belief has been opposed with in various verses of Quran and having faced it with different reasonable proofs, has explained the truth of man's life after earthly life. In the paper, therefore, the defective belief has been examined and Quranic considerations analyzed. And, finally, intending a comparative study on the cultures before and after the prophecy of Islam Prophet, has insisted on the hereafter life and examined various kinds of present eschatology.