The concept of the phoenix originated from Greek mythology in which it is described as an immortal bird. It is said that it lived for about six to seven centuries. It is thought to regenerate every time after burning itself own self so the cycle keeps ongoing. This is why the phoenix bird is used as a symbol of resurrection, immortality, and life after death. Fortunately; I Have Someone Take My Online Class so in my free time I gather information about various mythological things. I like to look into the history of things for my own knowledge.