Elisabeth Kubler-Ross identified 5 stages that dying patients commonly experience: denial, anger, bargaining, depression, and acceptance. The stages do not necessarily occur in order and a patient may revisit previous stages multiple times. In denial, patients refuse to accept they are dying. Anger emerges when denial is no longer possible. Patients may bargain with God for more time. Depression sets in from frustration with their situation and contemplating death. Eventually, patients accept their impending death in a calm state of quiet expectation.