This thesis studies the identity, context and features of Pentecostalism in Rajasthan, India as well as the internal and external issues facing Pentecostals. It argues for an indigenous origin of Pentecostalism in Rajasthan, as it is a product of local Spirit revivals in the existing churches and the missionary activities of Indian Pentecostals. It also reveals that both the intra-church as well as extra-church issues place Pentecostals in a ‘missio-ethical dilemma.’ The thesis aims to suggest ‘a contextual missiology of the Spirit,’ as a new model of contextual missiology from a Pentecostal perspective, which has emerged from this study. The inherent theological characteristics of Pentecostalism underline the pneumatological foundation of a contextual Pentecostal missiology. As a contextual missiology of the Spirit it has certain contextual features. By dealing with the global-local tension, it can be considered a glocal missiology. It is capable of promoting ecumenicity at various levels, and so it is an ecumenical missiology. By empowering people to engage in spiritual as well as socio-political issues, it aims to be a transformational missiology. As it is concerned with the well-being of the community, it has the potential to become a public missiology.