Book seven of the Rigveda contains three hymns unlike anything else in the collection. The poet Vasishtha addresses Varuna as a friend he has offended, asks what the offence was, wonders whether it was drink or dice or thoughtlessness or a dream, and pleads not to go to the house of clay before his time. There is nothing else in Vedic literature that sounds so much like a conscience. Varuna is the god who made that register possible, because he is the only one who is watching all the time.
Rta, and the god who enforces it
The central Vedic concept attached to him is rta: the order by which the seasons arrive, the rivers keep their courses, and the truth is distinguishable from a lie. Varuna does not invent it — nobody does — but he is its guardian, and the hymns describe him as having measured out the earth, set the sun in the sky, made a path for the waters and dug a channel for the rivers.
His enforcement is surveillance. He has spasas, spies, who go out through the world and report; not a blink of an eye escapes him; he knows the flight of birds over the sea and the tracks of the wind. The characteristic instrument is the pasha, the noose, with which he binds the liar and the oath-breaker. The characteristic punishment is dropsy — the body swelling with retained water, which for a god of waters is a fitting sentence and which Vedic and later Ayurvedic literature both call by his name.
He is usually paired with Mitra, so tightly that the dual compound Mitra-Varuna is treated as a single unit: Mitra is contract and alliance, Varuna is oath and sanction. Both are Adityas, sons of Aditi, and both are called asura in the older layer of the Rigveda, in the archaic sense of a lord possessing occult power, before that word slid into meaning demon.
The Iranian cousin, and a Syrian treaty
The parallels with Zoroastrian religion are close enough that they constitute evidence rather than curiosity. Avestan Ahura Mazda, the wise lord who upholds asha — the exact cognate of rta — occupies Varuna's structural position, and Mithra survives alongside him. Varuna's own name appears with Mitra, Indra and the Nasatyas in the Hittite-Mitanni treaty of around 1380 BCE, invoked as a divine guarantor of an international agreement in northern Syria. A god of oaths named in the oath clause of a real treaty is about as neat a piece of corroboration as this material offers.
Shrinking to the sea
By the epics he has almost nothing left of the moral office. He is a lokapala, guardian of the western quarter; he rides a makara, the crocodile-like water beast; and he presides over rivers, rain and the ocean. His narrative appearances in the Mahabharata and Ramayana are largely logistical — he supplies the bow Gandiva that reaches Arjuna at the burning of the Khandava forest, and in the Ramayana Rama threatens the sea with arrows until Varuna surfaces and explains how a causeway may be built across him.
The demotion is if anything steeper than Indra's, because Indra at least keeps a throne to lose repeatedly. Varuna keeps the water and loses the ethics, and the moral function he vacated was absorbed by the developing idea of dharma and karma, which do not require a watcher: a system in which acts carry their own consequences has no vacancy for a god who checks up on people.
Living traces, mostly practical
He has essentially no temple cult, and the survivals are ritual and vocational.
- Rain rites. When monsoons fail in parts of south India, communities still commission Varuna japa or Parjanya yaga, extended recitations addressed to him, sometimes performed by priests standing in a tank or river. These are reported in the Indian press most drought years.
- Fishing and seafaring communities on both coasts and in Bali invoke him before launching, and Balinese Hinduism keeps him as a god of the sea with his own offerings.
- The Indian Navy uses the Vedic line Sham no Varunah — may Varuna be auspicious to us — as its motto, and names its long-running joint exercise with the French navy after him.
- Buddhism carried him east as Suiten, one of the twelve directional guardians in Japanese esoteric tradition.
- The trans-Neptunian object 20000 Varuna, discovered in 2000, carries the name into the outer solar system.
Water offerings in daily worship, the tarpana poured to ancestors, and the ritual purity of river bathing all belong to a broader complex he presides over without being named in it.
Points worth clarifying about the binding god
Is Varuna the Indian Poseidon?
The equation misleads in both directions. His Vedic role is juridical rather than elemental, and his waters are as much the cosmic waters above the sky as the sea; the Greek sea god, by contrast, has nothing to do with truth-telling and a great deal to do with earthquakes and horses. If a comparison must be made, the earlier Varuna sits closer to a sovereign sky-god of contracts than to any sea deity, which is why the Iranian parallel is the useful one.
What is Varuna's disease?
Jalodara, dropsy or ascites — abdominal swelling from fluid — is attributed in the Rigveda and the Atharvaveda to his noose tightening on the offender, and the Atharvaveda preserves charms to loosen it. Classical Ayurvedic texts retain the association in name while giving physiological causes, which is a nice illustration of medical vocabulary outlasting the theology that generated it.
Why does the word asura change meaning?
In the oldest layer it is an honorific for a lord with mysterious power, applied to Varuna and Mitra without any negative charge. Over the Vedic period it hardens into the name of the gods' opponents, while deva — cognate with Latin deus — becomes the good class. Iranian religion made the opposite choice, treating ahura as divine and daeva as demonic, and the mirror-image reversal is one of the most-discussed puzzles in Indo-Iranian studies. No explanation for it commands general assent.
Is he related to the Greek Ouranos?
The old proposal that the two names are cognate is attractive and has largely been abandoned on phonological grounds; most linguists now derive Varuna from a root meaning to cover, bind or surround, which fits the noose and the encompassing waters. The similarity of sound and of sky-association is the kind of coincidence historical linguistics exists to test and, in this instance, to reject.
Does anything in Hindu practice still treat him as a moral overseer?
Indirectly. Oaths sworn on river water, the use of water in truth-telling and legal contexts in older Indian jurisprudence, and the ordeal procedures described in the Manusmriti — where an accused might be submerged — all descend from the association between water, binding and truth. The god is no longer named, but the logic that water tests a claim is his.