Vishnu ( विष्णु, Viṣṇu ) is a Hindu god, the Supreme God of Vaishnavism (one of the three principal denominations of Hinduism) and one of the three supreme deities (Trimurti) of Hinduism. He is also known as Narayana and Hari. As one of the five primary forms of God in the Smarta tradition, he is conceived as "the Preserver or the Protector" within the Trimurti, the Hindu Trinity of the divinity.
In Hindu sacred texts, Vishnu is usually described as having dark complexion of water-filled clouds and as having four arms. He is depicted as a pale blue being, as are his incarnations Rama and Krishna He holds a padma (lotus flower) in his lower left hand, the Kaumodaki gada (mace) in his lower right hand, the Panchajanya shankha (conch) in his upper left hand and the discus weapon Sudarshana Chakra in his upper right hand.
Vaishnava Canon
The Vaishnava canon presents Vishnu as the supreme being, rather than another name for the Sun God, who also bore the name Suryanarayana and is considered only as a form of Vishnu
Vedas:
In the Yajur Veda, Taittiriya Aranyaka (10-13-1), Narayana suktam, Lord Narayana is mentioned as the supreme being. The first verse of Narayana Suktam mentions the words "paramam padam", which literally mean "highest post" and may be understood as the "supreme abode for all souls". This is also known as Param Dhama, Paramapadam, or Vaikuntha. Rig Veda 1:22:20a also mentions the same "paramam padam". This special status is not given to any deity in the Vedas apart from Lord Vishnu/Narayana.Narayana is one of the thousand names of Vishnu as mentioned in the Vishnu Sahasranama. It describes Vishnu as the All-Pervading essence of all beings, the master of—and beyond—the past, present and future, one who supports, sustains and governs the Universe and originates and develops all elements within. This illustrates the omnipresent characteristic of Vishnu. Vishnu governs the aspect of preservation and sustenance of the universe, so he is called "Preserver of the universe".
Vishnu is the Supreme God who takes manifest forms or avatars across various ages or periods to save humanity from evil beings, demons or Asuras. According to the extant Hindu texts and traditions, Lord Vishnu is considered to be resident in the direction of the "Makara Rashi" (the "Shravana Nakshatra"), which is about coincident with the Capricorn constellation. In some of the extant Puranas, and Vaishnava traditions, Vishnu's eye is considered to be situated at the infinitely distant Southern Celestial Pole.
Following the defeat of Indra and his displacement as the Lord of Heaven or Swarga, Indra asks Lord Vishnu for help and thus Lord Vishnu takes his incarnations or avatars to Earth to save mankind, thus showing his position as Supreme God to all of creation.
In the Puranas, Indra frequently appears proud and haughty. These bad qualities are temporarily removed when Brahma and/or Shiva give boons to Asuras or Rakshasas such as Hiranyaksha, Hiranyakashipu and Ravana, who are then able to defeat Indra in wars between Devas and Asuras. The received boons often made Asuras virtually indestructible.
Indra has no option but to seek help from Vishnu. Indra prays before Vishnu for protection and the Supreme Lord obliges him by taking avatars and generating himself on Earth in various forms, first as a water-dweller (Matsya, fish), then as an amphibious creature (Kurma avatar or Tortoise), then as a half-man-half-animal (Varaha the pig-faced, human-bodied Lord, and Narasimha the Lord with lion's face and claws and a human body). Later, Vishnu appears as human beings (Vamana the short-heighted person), Parashurama, Rama, Balarama [or Buddha according to certain schools], Krishna, and finally as Kalki for performing his task of protecting his devotees from demons and anti-religious entities.
Vishnu's supremacy is attested by his victories over those very powerful entities. It is further attested by the accepted iconography and sculptures of Vishnu in reclining position as producing Brahma emerging from his navel. Brahma the creator is thus created in turn by Vishnu out of his own person. Instead Vishnu takes various avatars to slay or defeat those demons. But it is to be noted that Vishnu also provided boons to Akupresura, a bear faced demon who was destroyed by Lord Shiva.
Rigveda:
In the Rigveda, Vishnu is mentioned 93 times. He is frequently invoked alongside other deities, especially Indra, whom he helps in killing Vritra and with whom he drinks Soma. His distinguishing characteristic in the Vedas is his association with light. Two Rigvedic hymns in Mandala 7 are dedicated to Vishnu. In 7.99, Vishnu is addressed as the god who separates heaven and earth, a characteristic he shares with Indra.
The Rig Veda describes Vishnu as younger brother to Indra as Vamana. In Vaishnava canon the 'Vishnu' who is younger brother to Indra is identified as Vamana, Avatar of Vishnu, hence referred to as Vishnu by Vaishnavites. Vishnu is the Supreme God who lives in the highest celestial region, contrasted against those who live in the atmospheric or terrestrial regions. Vishnu is content with mere prayer, unlike almost all of the other gods who receive sacrificial offerings such as Havis, which is given using clarified butter, or Soma. Later foreign translators have view that Vedas place Indra in a superior position to Vishnu's Avatar of Vamana but in fact Vamana helps Indra by restoring his Kingdom.
Jan Gonda, the late Indologist, states that Vishnu, although remaining in the background of Indra's exploits, contributes by his presence, or is key to Indra's success. Vishnu is more than a mere companion, equal in rank or power to Indra, or sometime the one who made Indra's success possible.
Descriptions of Vishnu as younger to Indra are found in only the hymns to Indra, but in a kathenotheism religion like that of the Rigveda, each god, for a time, is supreme in the mind of the devotee.
In the Rig Vedic texts, the deity or god referred to as Vishnu is the Sun God, who also bears the name 'Suryanarayana'. By contrast, the 'Vishnu' referred to in 'Vishnu Purana', 'Vishnu Sahasranamam' and 'Purusha Sooktham' is Lord Narayana, the Consort of Lakshmi. Vaishnavites make a further distinction by extolling the qualities of Vishnu by highlighting his differences from other deities such as Shiva, Brahma or Surya.
