Transformed by his encounter with God, Thirumangai gave up his chieftainship and became a devout Vaishnava, dedicated to god Vishnu. To atone for his sins, he visited 88 of the Divya Desams, a group of 108 Vishnu shrines primarily in south India. He spread the poems of older Alvars in his wandering. He was also well versed in earlier Tamil literature like Naaladiyar, Thirukkural, Sangam literature and Jain literature.