Thich Nhat Hanh explains that sangha is more than a community, it’s a deep spiritual practice.
A sangha is a community of friends practicing the dharma together in order to bring about and to maintain awareness. The essence of a sangha is awareness, understanding, acceptance, harmony and love. When you do not see these in a community, it is not a true sangha, and you should have the courage to say so. But when you find these elements are present in a community, you know that you have the happiness and fortune of being in a real sangha.
In Matthew 5:13 in the New Testament of the Christian Bible, we find this statement: "Ye are the salt of the earth; but if the salt hath lost its savor, wherewith shall it be salted? It is thenceforth good for nothing but to be cast out and to be trodden underfoot of men." In this passage, Jesus describes his followers as salt. Food needs salt in order to be tasty. Life needs understanding, compassion and harmony in order to be livable. This is the most important contribution to life that the followers of Jesus can bring to the world. It means that the Kingdom of Heaven has to be realized here, not somewhere else, and that Christians need to practice in a way that they are the salt of life and a true community of Christians.