References to Durga look in a number of the most historic Sanskrit scriptures. She's named in hymns through the Rigveda and in the Atharvaveda (c. 1500–1200 bce). Two texts in the Hindu writings collectively often known as the Puranas are dedicated to the goddess: Sati was born a 2nd time, https://www.youtube.com/watch?v=S1HpMpEww4Q