Hinduism, though the Vedas, the scripture of Hindus, declare that the Reality is with out Attributes, Nirguna.
The Reality is Nameless ans Formless.
However it also advocates the worship of the Forms.
This is because the Human mind is incapable of concentrating on a vacuum.
The Realization of the Supreme principle lies in realizing the Ultimate, Brahman, The Reality, the one with out Attributes.
Yoga system defines(Yoga means Union),Yoga as the cessation of the modifications of the Chitta, the thought waves.
Once removed of the thought waves are removed, the Reality is realized .
We have numerous thought waves churning in our mind,
These have to be reduced gradually, they can not be removed at one stroke except by the very rare ones.
Others have to go step by step.
The though waves are present because of our attachment to objects of desire.
We desire them ;hate them;these produce thought waves,
If one focuses on an object of his desire, he becomes immersed in it.
Since human nature is to go after things that are to his/her liking, an image has been suggested.
This form may be that of a Mother, father, son, friend Man or woman in terms of the qualities one expects.
One feels like sharing things with these , either people or a mental projection of these.
In this process one loses himself and this is the first step in realization of the Self.
Hinduism has these names with forms in three stages.
One without Attributes, the Nirguna Brahman, the Ultimate.
The worship of this ultimate is difficult.
So a step lower than this is devised.
And that is with Form yet without Form.
This is the symbol.
It is represented by the Shiv Linga.
This has a Form, in the form of a sign.
It also does not have a specific Features.
This is the Uruva Aruva worship ( Form yet with out Form)
Then comes another lower level.
This has a specific Name and Form.
As Devi, the Mother, Vishnu as father,Shiva as the Mentor, Subrahmanya , the child,Ganesha and the rest of the Hindu Pantheon.
Thus Hinduism guides an individual in the path of Realization by these easy steps in concentration.
1.Gods with names and Forms.
2.Reality with Form yet without It.
3.The Ultimate, without Attributes.