The Bhakti movement stands as one of the most transformative spiritual and social revolutions in Indian history, reshaping religious thought and practice from the 7th century onward. Emerging in South India through the devotional hymns of the Alvars and Nayanars, it gradually spread across the entire Indian subcontinent, placing personal devotion, love, and surrender to God above empty rituals and rigid caste hierarchies. Saints like Kabir, Guru Nanak, Mirabai, Tulsidas, and Chaitanya Mahaprabhu preached directly to common people in regional languages, making spirituality accessible to everyone regardless of caste, gender, or social status. Their teachings championed equality, inner purity, and direct communion with the divine, challenging Brahmanical orthodoxy and empowering marginalized communities across the whole country. This article explores the origins, philosophy, prominent saints, and lasting social impact of the Bhakti movement, along with its core teachings that continue to inspire millions even today. It also includes a dedicated FAQ section addressing common questions that UPSC aspirants and history students often have, covering key concepts such as Nirguna and Saguna Bhakti, the movement's relationship with Sufism, and its broader significance within medieval Indian history, culture, and society as a whole.