Brahma, the Creator
Brahma is the first member of the Hindu Trinity and is “the Creator” because he periodically creates everything in the universe. (The word periodically here refers to the Hindu belief that time is cyclical; everything in the universe — except for Brahman and certain Hindu scriptures — is created, maintained for a certain amount of time, and then destroyed in order to be renewed in ideal form again.)
Vishnu, the Preserver
Vishnu is the second member of the Hindu Trinity. He maintains the order and harmony of the universe, which is periodically created by Brahma and periodically destroyed by Shiva to prepare for the next creation.
Vishnu is worshipped in many forms and in several avatars (incarnations). Vishnu is an important, somewhat mysterious god. Less visible than nature gods that preside over elements (such as fire and rain), Vishnu is the pervader — the divine essence that pervades the universe. He is usually worshipped in the form of an avatar (see below).
Shiva, the Destroyer
Shiva is the third member of the Hindu Trinity, tasked with destroying the universe in order to prepare for its renewal at the end of each cycle of time. Shiva’s destructive power is regenerative: It’s the necessary step that makes renewal possible.
Hindus customarily invoke Shiva before the beginning of any religious or spiritual endeavor; they believe that any bad vibrations in the immediate vicinity of worship are eliminated by the mere utterance of his praise or name.
Ganapati, the Remover of Obstacles
Ganapati, also known as Ganesha, is Shiva’s first son. Lord Ganapati, who has an elephant head, occupies a very special place in the hearts of Hindus because they consider him the Remover of Obstacles. Most Hindu households have a picture or statue of this godhead, and it’s not uncommon to see small replicas of Ganapati hanging from rearview mirrors of cars and trucks!
Avatars of Vishnu
The literal meaning of the word avatar is “descent,” and it’s usually understood to mean divine descent. Avatars are savior forms of a god that descend to earth to intervene whenever help is needed to restore dharma (moral order) and peace. Two of Vishnu’s ten avatars are Rama and Krishna.
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