Over centuries, the cult of Vāsudeva transformed into Vaishnavism. Overall, Vaishnavite Hinduism is believed to have originated in the 4th century BC in the cult of Vāsudeva-Krishna, which was then grafted in the 2nd century AD onto the cult of Narayana. By the 4th century, Vishnu's prominence increased considerably. He was now regarded as a member of the Trimurti, the cosmic triad of Gods, Brahma, Vishnu and Shiva.