In many nations, the dynamics of economy, politics, and culture are often not determined by the majority, such as the farmers or fishermen. Instead, the main drivers and decision-makers of economic policy are often in the hands of the few who are well-educated, capital owners, and those who have access to the government. Three main roles of the societies at the middle ages which were the feudal lords/capital owners, the farmers, and traders still play similar roles today where the capital owners supported by some government units exploit the poor farmers and fishermen as they control the production process, market access, and supply chain line. With such a system, it has been proven that humanity ends up suffering from health issues, social or political conflicts, economic crises, and even ecological disasters. With the conditions above, various theologians proposed a Christian concept of an economic system that is based on the understanding of the Trinitarian God. As it is central throughout Christian theology, any theology that relates to economic systems can be linked to Trinitarian presuppositions, i.e. relational identity. However, there has been no economic system and its application regarding both. This writing is an effort to explore whether the concept of koinomics or economic system based on the Trinitarian dimensions, which is koinonia and perichoresis, can be applied to the economic system of a small community as a model. The article also explores other religious concepts and their application to address the issue.