Worship of shivalinga is considered the prime worship for the devotees of Lord shiva. Worship of all other forms is considered secondary. The significance of the shivalinga is that It is the resplendent light (flame) form of the Supreme - solidified to make the worship of It easier. It represents the real nature of God - formless essentially and taking various forms as It wills.
This jyoti swarUpa of God exist in all the shivalinga forms, there are prominent abodes across Indian subcontinent, where It is in a splendid form. These are renowned as dvAdasa jyotir lingas or 12 jyotirlingas. These are held at much great esteem since the ancient pre-historic times. purANas talk in many sections as well as in detail about the glory of these abodes. Devotees have been getting pulled towards these kshetras due to the highly benevolent divine presence in these abodes, since ancient times.
Those who chant the Dwadasa JyotirLinga Stotram or prayer will attain salvation and enlightenment and be released from this cycle of human existence with all its travails. By worshipping the Lingas, people of all castes, creeds and colour would be freed from all difficulties. By eating the holy offering made to these Lingas (Naivedyam) one would be rid of all the sins instantly.
As a matter of fact, we do the Darshan of the JyotirLingas as a part of our daily life. Sun, Fire and Light etc., are indeed a part of that great Light. "Om tatsavituvarenye" these magical words of the Gayatri mantra or chant invoke this Supreme light only. By chanting this powerful Mantra, humans can obtain divine power to their life-light or Atmajyothi.
The aura of the Sun rays and the various benefits that can be derived there from is indeed a difficult task to describe. This gorgeous life-light is the only thing that is responsible for the activity in the universe. We salute this life force.
"Agni" or fire is a great light. For all the activities on the earth, "Fire" is the pivot.
Deepajyoti or light and its greatness, is known to all of us, and we offer our prayers. Let us celebrate the glory of light. Light is offered a place of pride at welcome celebrations and on all auspicious occasions.