What is the significance of Adi Shesha in Hindu mythology and how does it relate to the concept of eternity?

In Hindu mythology, Adi Shesha is a divine serpent who serves as the bed of Lord Vishnu. He symbolizes eternity and the concept of timelessness, as he is believed to support the universe and all creation on his infinite coils. Adi Shesha's presence highlights the idea of eternal existence and the cyclical nature of life, reflecting the belief in the eternal and unchanging nature of the universe.