"Or the Shiv of Kali?"

goddess kali ma
Creative Commons Attributiongoddess kali ma - Credit: alicepopkorn / Alice / Cornelia Kopp
 Kali is a Hindu goddess, consort to Shiva, associated with eternal energy and the manifestation of time. Kali is tasked with the destruction of the world at the end of the fourth age, after which a new life cycle begins.

One of her four hands holds a sword: this may be the Shiv Aziraphale refers to.