Further growth and usage of the language was because of two religious sects – the Mahanubhava and Varkari "panthan"s – who adopted Marathi as the medium for preaching their doctrines of devotion. Marathi was used in court life by the time of the Seuna kings. During the reign of the last three Seuna kings, a great deal of literature in verse and prose, on astrology, medicine, Puranas, Vedanta, kings and courtiers were created. "Nalopakhyan", "Rukmini swayamvar" and Shripati's "Jyotishratnamala" (1039) are a few examples.