When prevention of death is impossible and the long term, medical treatment is not helpful, the palliative treatment staff try to help the patient with more comfort and pain relief 1. The goal of end-of-life care is to provide the possibility of death with dignity and tranquility for the patient in order to make the family more relaxed 2. Patient and family must spend their last days of life without fear, anxiety, grief and with less suffering 3. Palliative treatment staff are obliged to recognize the concept of death. They should be able to listen with sympathy without judgment 4. They must be aware of anxiety and fear of death and correct their point of view about death in accordance with the patients’ social culture and beliefs and reduce fear, anxiety of death 5.

From the scientific point of view, death is an irreversible stop in life and vital signs 6. Whenever the body fails to adapt itself to the new conditions and vital activities are not possible, death occurs 7. Some scholars consider death as a process, not a sudden occurrence, which begins with processes of "burnout." In this definition, there is no clear boundary between death and life, and it's very difficult to determine the exact time of death. This group says that death occurs when the whole organism cannot act as an intact whole 8. Life is meaningful when human beings have the power of cognition and consciousness. So life without these criteria is inevitable. They introduce death as a complete ignorance of external stimuli and internal needs and the lack of complete response to them 9.

For centuries, death was a puzzle 8. It was thought that the only definitive sign of the death of a human being should be "corruption of the corpse". In the late 18th century, in Europe, there were places for holding the dead person for two to three days. Hence, with the delay in burying the dead persons, they examined the signs of corrupting corpses 10. Until the middle of the 19th century, physicians did not officially play a role in determining death. The first law of mandatory confirmation of death by medical graduates in England passed by the Parliament in 1836, and centers of death certificate were established. In 1901, an examination by a physician or a surgeon was legally mandatory for a death certificate, in the United States, and other parts of Europe. In 1918, the law for using the death test was approved in France 11.

With the recognition of the circulatory system and the identification of respiratory physiology, the importance of perfusion and tissue oxygenation was determined 12. In the early years of the twentieth century, cardiopulmonary arrest was a standard indication of death 13. With the advancement of medical technology such as defibrillator-pacemaker-ventilator and advances in resuscitation methods, thousands of re-life cases were reported in patients with cardiopulmonary arrest 14. These findings showed that stopping heart or breathing is not the end point of life. The human is alive, as long as its brain cells are alive. Therefore, brain death was defined as the "main criterion" of the end of life 15.

In 1959, “Mora let” and colleagues expressed an irreversible coma as “Coma DE passé”. In 1968, a special committee at the Harvard Medical School, provided definitions and criteria for brain death 16. In 1981, World Criteria for Brain Death were announced by the National Institutes of Health in the United States and the Advisory Group, the High Commission on Medical Ethics 17. These criteria are currently recognized in most of the Americans and European countries. In the above mentioned laws, brain death is defined as the irreversible damage to cerebral hemispheres and brain stem 1819.

All scientific findings over the years are related to the human body. The main criterion for determining death is the death of the heart, lung and brain. But among followers of the Abrahamic religions there is a belief in the existence of the soul and life after death 20. This belief has been neglected in scientific terms. So the question is:

What happens to the soul during the death?

What is the fate of "human soul" when he is dead?

This Evolutionary Study has Focused on this Question:“what is the difference between the concept of death from the perspective of theology and empirical science?” the following stages were carried out to promote and complete the available knowledge by using a systematic, scientific and justifiable process as follow 21:

Empirical sciences consider death as a biological phenomenon, which results from irreversible damage to cerebral hemispheres and brain stem (brain death).

The unknown causes fear. People who are unaware of the death have anxiety and fear 22. While from the perspective of Islam death is the "journey of the soul" to the heaven house, moving towards the God kindness 23. Death doesn’t mean destruction. Death is complete reception of the soul from the body and transferring it to another world. So, we will not die with death, but we will begin a new life 24.Death is moving from a home to another 25, it is a bridge that brings the believers to the paradise and disbelievers into hell 26, it is like taking off dirty clothes and unlocking the heavy chains and putting on the finest clothes and the best perfumes 27, it is passing through the darkness and losses, it is going to the eternal blessings, it is smelling the best flowers and end for all pains and suffering 28.

Having a sound heart is the source of happiness in this world and salvation on the Day of Judgment. Sound heart owners are free from fear, anxiety and sadness 40. They live and die under the protection of God's love. For them death does not mean destruction, it is the beginning of life after death and the blessings of paradise. In pastoral care at the end of life, reduce patients’ anxiety and fear of death, with hope in God's mercy is necessary.

“For this type of study formal consent is not required.”