Sage Vyasa wrote Mahabharata in three years (Adi Parva.62.52). The battle at Kurukshetra was fought over eighteen days.
Bhishma was incarnation of one among the Ashta-Vasus.
Is God necessary?
Ganesha Atharva Sheersha explained - Part 3
Radha Ashtottara Shata Namavali
om mantrinyai namah'. om mantranaayikaayai namah'. om mantraraajaikasamsevyaayai namah'. om mantraraajaikasiddhidaayai namah'. om asht'aadashaaksharap....
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