The
RigVeda is anything but monotheistic. Vedic Religion was basically nature-worship with a specific deity in control of elements like wind, water, rains, Sun etc. Indra, Vayu, Varuna, Savitr, Rudra, Mitra etc are among the various elemental deities mentioned in the text. And please, since when is Shaivism monotheistic? There are 5 "primary" Gods that are honoured more over the rest in Shaivism. Buddhism and Jainism are not monotheistic either. Rather, they're sects that border on Atheism!
It does not matter what a certain Swami Dayanand Saraswati thinks about Hinduism or any other religions. Those are his personal views. Going by the same yardstick, do all Muslims follow/believe everything that an Ayatollah says?
Just like there are sects in Islam, there are sects in Hinduism too. The only difference is that Shaivites won't kill Vaishnavites over this petty squabble.
Still, if it can help with his wet dreams, the OP can go ahead and sleep tight with thoughts that Hinduism was never established north of the Radcliffe Line in over 4000 years.
This goes on to show how little hindus know about their oldest holy book.
Indra, varuna, agni are not deities or devas they are just names of almighty Ishwar.
Indraṃ mitraṃ varuṇamaghnimāhuratho divyaḥ sa suparṇo gharutmān,
ekaṃ sad viprā bahudhā vadantyaghniṃ yamaṃ mātariśvānamāhuḥ
"They call him Indra, Mitra, Varuṇa, Agni, and he is heavenly nobly-winged Garutmān.
To what is One, sages give many a title they call it Agni, Yama, Mātariśvan.
Rig Veda 1.164.46
The Vedas refer to not 33 crore Devatas(Deities) but 33
types (Koti in Sanskrit) of Devatas. They are explained in Shatpath Brahman very clearly. These include -
8
Vasus (Earth, Water, Fire, Air, Sky, Moon, Sun, Stars/ Planets) that form components of universe where we live,
10 Life Forces in our body or Prana (Prana, Apana, Vyana, Udana, Samaana, Naga, Kurma, Kukala, Devadatta) and 1 Soul called
Rudra,
12
Aditya or months of year,
1
Vidyut or Electromagnetic force that is of tremendous use to us
1
Yajna or constant noble selfless deeds done by humans
The master of these 33 Devatas is the
Mahadeva or
Ishwar who alone is to be worshipped as per 14th Kanda of Shatpath Brahman.