This document summarizes the development of bhakti, or devotional, traditions in India from around the 1st century CE onward. It discusses how the idea of a supreme god who could deliver humans from rebirth through devotion became popular. Over time, figures like Shiva, Vishnu and Durga emerged as popular deities. From the 7th-9th centuries, religious movements led by poet-saints like the Nayanars and Alvars helped strengthen links between bhakti traditions and temple worship. Philosophers like Shankara and Ramanuja further developed ideas of oneness between the soul and god. Other notable bhakti traditions discussed include Virashaivism started by Basav