This thesis looks into the issue of self-definition or identity of the minority Christian Churches on the Indonesian Island of Bali. Their self-definition is formulated in close relation to their social, religious and cultural context. It is composed of a 'story' and 'discourse,' namely the interactions between Christianity and the Balinese culture. With regard to the 'story,' they share the same history, tradition and cultural heritage with the Bali-Hindus (chapter one). The problem is that for the majority Bali-Hindus, Christianity is considered alien to Balineseness. Therefore, being Christian means an infringement of the socio-cultural network of this exclusive and feodal society; and so the Christians have taken over the experience of the `traditional' outsiders (chapter two). In the matter of 'discourse' that leads to the motto 'Bali is my body and Christ is my life,' they find that faith is the fundamental factor for their identity, albeit their marginalization due to it. Chapter three then explores a theology that could support their search for belongingness, which is founded on the faith as `chosen people of God.' The thesis finally suggests that these minority and marginal people could regain their self-respect in working out a 'theology of sharing' as their way of life.