Most Hindus believe in a Supreme God, whose qualities and forms are represented by the multitude of deities which emanate from him. God, being unlimited, can have unlimited forms and expressions.
God can be approached in a number of ways and a devoted person can relate to God as a majestic king, as a parent figure, as a friend, as a child, as a beautiful woman, or even as a ferocious Goddess. Each person can relate to God in a particular form, the ishta devata or desired form of God. Thus, one person might be drawn towards Shiva, another towards Krishna, and another towards Kali. Many Hindus believe that all the different deities are aspects of a single, transcendent power.