We can find backing for this categorization of incarnations from Indian mythology as well. Varaha, Narasimha, Rama, and Krishna were responsible for annihilating evils in the form of Hiranyaksha, Hiranyakashipu, Ravana and Kumbhakarna, and Shishupala and Dantavakra, respectively. These forms of evil, according to a story in the Srimad Bhagavat Purana, were all rebirths of Jaya and Vijaya, Vishnu’s gatekeepers, who were born three times on earth with inherent demonic qualities to pacify a curse. Because complete eradication of evil may be difficult for a possessor of jiva-tattva, which is characterized by the presence of ignorance, only paramatma could have accomplished the task.
While matching energies of astrological planets with that of Vishnu’s incarnations, Parashara relates Rama and Krishna to the luminaries, sun and moon, respectively, giving them another advantage in astrological symbology which speaks out for itself. The divinity of Rama and Krishna, which resides in the hearts of believers, does not need astrological reinforcement, but it is worthwhile to observe how all Vedic subjects were intricately connected to underline the deeper reach of traditional knowledge.