In the
Rigveda, the oldest of the Vedic texts, Mitra is mostly indistinguishable from
Varuna, together with whom Mitra forms a
dvandva pair Mitra-Varuna, and in which Mitra-Varuna has essentially the same characteristics as Varuna alone. Varuna is not only the greater of the two, but also – according to
RV 2.12 – the second-greatest of the RigVedic gods after
Indra.
Combined descriptions Mitra-Varuna are conceived as young, they wear glistening garments, are monarchs and guardians of the whole world and their palace is golden, with a thousand pillars and a thousand doors. They support (and are frequently invoked next to) heaven and earth, and the air between heaven and earth. They are lords of rivers and seas, and they send rain and refreshment from the sky.
Asuras and devas Although they are Asuras, Rigvedic Mitra-Varuna are also addressed as
devas (e.g.,
RV 7.60.12). Mitra is also a
deva (
mitrasya...devasya,
RV 3.59.6) in
RV 3.59, which is the only Rigvedic hymn dedicated to Mitra independently from Mitra-Varuna. Despite the independent dedication, Mitra still retains much the same characteristics as Varuna in that hymn. Like Varuna, Mitra is lauded as a god following
ṛta, order and stability and of observances (3.59.2b,
vrata). Again like Varuna, Mitra is the sustainer of mankind (3.59.6a, said also of
Indra in 3.37.4c) and of all gods (3.59.8c,
devān vishvān). Elsewhere, when Mitra appears not paired with Varuna, it is often for the purpose of comparison, where other gods are lauded as being “like Mitra”, without the hymn being addressed to Mitra himself (
Indra 1.129.10, 10.22.1–2 etc.;
Agni 1.38.13 etc.;
Soma 1.91.3;
Vishnu 1.156.1). A characteristic unique to Mitra is his ability to marshal the people ('
, '), an attribute that appears to be peculiarly his.
Distinct characteristics In some of their aspects, Varuna is lord of the cosmic rhythm of the sun and other celestial spheres, while Mitra brings forth the light at dawn, which was covered by Varuna the previous evening. Mitra is also independently identified as being force by which the course of the sun is regulated (ṛta);
Savitr (
RV 1.35) is identified with Mitra because of those regulations, and
Vishnu (
RV 1.154) takes his three steps by those regulations. Agni is kindled before dawn to produce Mitra, and when kindled is Mitra. In the
Atharvaveda, Mitra is again associated with sunrise, and is contrasted with Varuna's association with the evening. In the
Brahmanas, the
exegetical commentaries on the Vedas, the associations with morning and evening lead Mitra to be connected with the day, and Varuna with night. Also in
Shatapatha Brahmana, Mitra-Varuna is analyzed as "the Counsel and the Power" – Mitra being the priesthood (
Purohita), and Varuna the royal power (
Rājān). ==In Post-Vedic texts==