Lord Shani the son of Surya Dev and Vikshubha or Chhaya is one of the nine "Navagraha" (celestial gods) in Hindu belief. Lord Shani occupies the seventh place among these nine planets which govern our lives. After the birth of Lord Shani when he first opened his eyes, it is believed that his father Surya went into an eclipse. Since then Lord Shani is believed to be the god causing miseries in the life of a human being. Hence Shani occupies the principal position among the pantheon of Hindu deities in warding off evil and to get rid off obstacles. He is the brother of Yama (deity of death) and is believed to be responsible for punishing or rewarding one in the lifetime in accordance with their 'karma' (action).
Shani Kavach is used to Propitiate an afflicted Shani/Saturn and achieve Rajayoga through complete blessings of Shani. When Saturn is malefic in a horoscope, in transit or causes Sadesati, use of Shani kavach is very Beneficial. Shani Kavach is useful, when one feels depressed. It indicates sucess in wordly affairs, success in business and the man touches the dizzy heights.