The Rishis describe Mahadeva as Agni, and Sthanu, and Maheshvara; as oneeyed, and threeeyed, of universal form, and Shiva or highly auspicious.
वदन्त्यग्निं महादेवं तथा स्थाणुं महेश्वरम्। एकाक्षं त्र्यम्बकं चैव विश्वरूपं शिवं तथा॥