Many ,almost all Hindus,non hindus have this problem-That how many GODS are in Hinduism? Well if you read VED- Then it is one GOD. In puran-which is not authentic as it is many stories- people get confused. ;Let us start here explanation-Vedas speaks of one god ...and one way of worship. There is only one God and sages call him with different Names.The only path to attain salvation is Truth. For e.g. you cannot consider practices like animal sacrifice on name of Dharma (practised by some Hindus) equivalent to Ahinsa or concept on non killing (practised by many Hindus) equivalent to each other as both are totally opposite to each other. Better understanding of the Right Interpretation of the Vedas solves the doubts on Religion. There is also a misunderstanding about Christianity and Islam that they are monotheistic i.e. Believes in one God as Christianity believes in Neither one, nor two but three Gods that are Holy Soul, Holy Father an Holy Son. While Islam believes in God, his messengers and the Last Prophet Muhammad. The Vedic concept of God believes in one and only one God with no mediator in between and God is omnipotent, omnipresent, all pervading, never born, never dying, all knowing and creator of the Universe.
No other literature describes the existence of Only One God as beautifully as Veda does. -
Na dvitityo Na triyaschthurtho naapyuchyate|
N a panchamo Na shshtah sapthmo naapyuchyate|
Nashtamo Na navamo dashamo naapyuchyate|
Yagna yetham devamekavritham veda||
Sa sarvassai vi pashyathi yachha praanathi yachhana|
Tamidam nigatam sah sa yesha yeka yekavrideka yeva|
Ya yetham devamekavritham veda|| Atharva 13.4[2]19-20
There is no second God, nor a third, nor is even a fourth spoken of
There is no fifth God or a sixth nor is even a seventh mentioned.
There is no eighth God, nor a ninth. Nothing is spoken about a tenth even.
This unique power is in itself. That Lord is only one, the only omnipresent. It is one and the only one.
The Vedas reject the multiplicity of Gods in the clearest possible terms and speak about One God, who is Omnipresent, Omnipotent and Omniscient and absolutely and absolutely formless, who is ever unmanifest and who never assumes human forms or never descends on earth in any form- human or otherwise. Rig-Veda says “Vishwarkya vimana advihaya” meaning who he is not entangled by mind, omnipresent Lord is the Creator. He is both sustainer and protector too.
The God oversees the insensate and conscious world in a unique way. The entire world rests with him. He is “Yeshah yekah” i.e. only one,conscious, indivisible.
After reading the description of God in this manner, Sri W.D.Brown writes,
It [Vedic Religion] recognizes but one God.
Vedas call upon to offer worship due only to God and no one else; to nothing else. It is clearly stated in Rig-Veda as under.
Ma chidanyad vishamsata Sakhyo ma rishanyatha|
Indramit srotha vrishanam sacha suthe
muhurukhya cha samshata||
Atharva 20.85.1
Friends! Do not praise and worship anything else, do not be doomed, praise and worship only the benevolent God Almighty, unitedly in this world, sing his glory, again and again.
Yeka yeva namasyo vikvidah| Atharva 2.2.1
Among all the men and women, there is only one. Who is worthy of adoration, and worthy of worship too.
Na tvaam anyo divyo na parthivo na jato na janishyathe|
Yajurveda 27.36
Oh God! There is nobody like you either in this world or the world beyond. No body equal to you is born as yet nor will be born ever in future also.
There are people who are under illusion that there are many Gods after coming across words like Indra, Agni, and Varuna etc. But these words that signify both God and things other than Gods should not mislead the seeker after truth’ with this purpose in view, the Vedas declare clearly:-
Indram Mitram varunamagnimaahuratho divyah sa suparno garuthmaan|
Yekham sadvipra bahudha vadantyagnim yamam maatarishwanamaahuh||
Rigveda 1.64.46
The real God is one, the enlightened ones, speak of Him in several ways, God is divine, the supreme protector and graceful sentient, the Universal soul. They call Him Indra, the Almighty, the universal friend [mitra]. Varuna the most acceptable and obliterator of sins, they describe Him as [agnim] the supreme guide of the Universe, {Yaman} the controller of the Universe, and {matarishvanam] the life of all lives.
So in other words, Indra, Agni, Yama, Suparna, Garuthman and others are different epithets for one and the same God[ though not exclusively, as the same words signify other entities too in different contests]. All doubts about the correctness of the unequivocal statement that the Vedas uphold only monotheism and not Polytheism are set at rest when we consider
Yo na pitah janitha vidhata dhamani veda bhuvanani vishwa|
Yo devaanam namadha yeka yeva tam samprashnam bhuvanam yantyanya||
Rigveda 10.82.3
All these several worlds, find ultimate refuge, in that curiosity-provoking, thought –arousing Lord who is our father and creator, who is , the maker of sacred injunctions and Knows all the abodes and worlds and finally who is only one assuming the names of different divinities.
Vedas describe only One God at all places. The advice is He alone should be praised and worshipped. He alone is the emperor of the Universe.
Yekho Vishwasya bhuvanasya rajah Rig-Veda 6.36.4
The Lord of the entire universe is one and one only.
Vedas clearly mentions of one God.
From vedic truth
Here is a paraphrase of Darwin's argument. Although humans have
complex camera-type eyes, many animals get by with less. Some tiny creatures
have just a simple group of pigmented cells, or not much more than a light
sensitive spot. That simple arrangement can hardly be said to confer vision, but
it can sense light and dark, and so it meets the creature's needs. The
light-sensing organ of some starfishes is somewhat more sophisticated. Their eye
is located in a depressed region. This allows the animal to sense which
direction the light is coming from, since the curvature of the depression blocks
off light from some directions. If the curvature becomes more pronounced, the
directional sense of the eye improves. But more curvature lessens the amount of
light that enters the eye, decreasing its sensitivity. The sensitivity can be
increased by placement of gelatinous material in the cavity to act as a lens.
Some modern animals have eyes with such crude lenses. Gradual improvements in
the lens could then provide an image of increasing sharpness, as the
requirements of the animal's environment dictated.
To Darwin
vision was a black box, but today, after the hard, cumulative work of many
biochemists, we are approaching answers to the question of sight. Here is a
brief overview of the biochemistry of vision. When light first strikes the
retina, a photon interacts with a molecule called 11-cis-retinal, which
rearranges within picoseconds to trans-retinal. The change in the shape of
retinal forces a change in the shape of the protein, rhodopsin, to which the
retinal is tightly bound. The protein's metamorphosis alters its behavior,
making it stick to another protein called transducin. Before bumping into
activated rhodopsin, transducin had tightly bound a small molecule called GDP.
But when transducin interacts with activated rhodopsin, the GDP falls off and a
molecule called GTP binds to transducin. (GTP is closely related to, but
critically different from, GDP.)
Now, are any
biochemical systems irreducibly complex? Yes, it turns out that many are. A good
example is the cilium. Cilia are hairlike structures on the surfaces of many
animal and lower plant cells that can move fluid over the cell's surface or
"row" single cells through a fluid. Inhumans, for example, cells lining the
respiratory tract each have about 200 cilia that beat in synchrony to sweep
mucus towards the throat for elimination. What is the structure of a cilium? A
cilium consists of bundle of fibers called an axoneme. An axoneme contains a
ring of 9 double "microtubules" surrounding two central single microtubules.
Each outer doublet consists of a ring of 13 filaments (subfiber A) fused to an
assembly of 10 filaments (subfiber B). The filaments of the microtubules are
composedof two proteins called alpha and beta tubulin. The 11 microtubules
forming an axoneme are held together by three types of connectors: subfibers A
are joined to the central microtubules by radial spokes; adjacent outer doublets
are joined by linkers of a highly elastic protein called nexin; and the central
microtubules are joined by a connecting bridge. Finally, every subfiber A bears
two arms, an inner arm and an outer arm, both containing a protein called
dynein.
Here's a picture of a cell trapped in a
clot. The meshwork is formed from a protein called fibrin. But what controls
blood clotting? Why does blood clot when you cut yourself, but not at other
times when a clot would cause a stroke or heart attack? Here's a diagram of
what's called the blood clotting cascade. Let's go through just some of the
reactions of clotting.
None of the papers
discussed detailed models for intermediates in the development of complex
biomolecular structures. In the past ten years JME has published over a thousand
papers. Of these, about one hundred discussed the chemical synthesis of
molecules thought to be necessary for the origin of life, about 50 proposed
mathematical models to improve sequence analysis, and about 800 were analyses of
sequences. There were ZERO papers discussing detailed models for intermediates
in the development of complex biomolecular structures. This is not a peculiarity
of JME. No papers are to be found that discuss detailed models for intermediates
in the development of complex biomolecular structures in the Proceedings of the
National Academy of Science, Nature, Science, the Journal of Molecular Biology
or, to my knowledge, any science journal whatsoever.
The shape of one rock might have been determined primarily by one
mechanism, the shape of another rock by another mechanism. The possibility of a
meteor's impact does not mean that volcanos can be ignored; the existence of
sculptors does not mean that many rocks are not shaped by weather. Similarly,
evolutionary biologists have recognized that a number of factors might have
affected the development of life: common descent, natural selection, migration,
population size, founder effects (effects that may be due to the limited number
of organisms that begin a new species), genetic drift (spread of neutral,
nonselective mutations), gene flow (the incorporation of genes into a population
from a separate population), linkage (occurrence of two genes on the same
chromosome), meiotic drive (the preferential selection during sex cell
production of one of the two copies of a gene inherited from an organism's
parents), transposition (the transfer of a gene between widely separated species
by non-sexual means), and much more. The fact that some biochemical systems were
designed by an intelligent agent does not mean that any of the other factors are
not operative, common, or important. 
Things got steadily
worse over the years. With the discovery of fossils it became apparent that the
familiar animals of field and forest had not always been on earth; the world had
once been inhabited by huge, alien creatures who were now gone. Sometime later
Darwin shook the world by arguing that the familiar biota was derived from the
bizarre, vanished life over lengths of time incomprehensible to human minds.
Einstein told us that space is curved and time is relative. Modern physics says
that solid objects are mostly space, that sub atomic particles have no definite
position, that the universe had a beginning.
Now it's the turn of
the fundamental science of life, modern biochemistry, to disturb. The simplicity
that was once expected to be the foundation of life has proven to be a phantom.
Instead, systems of horrendous, irreducible complexity inhabit the cell. The
resulting realization that life was designed by an intelligence is a shock to us
in the twentieth century who have gotten used to thinking of life as the result
of simple natural laws. But other centuries have had their shocks and there is
no reason to suppose that we should escape them. Humanity has endured as the
center of the heavens moved from the earth to beyond the sun, as the history of
life expanded to encompass long-dead reptiles, as the eternal universe proved
mortal. We will endure the opening of Darwin's black box.