The term 'Christian Unity' can be summarized by the seven-letter word 'Irenics'. Irenics is a branch of theology that focuses on the promotion of peace and unity among different Christian denominations. It is based on the idea that all Christians should strive to find common ground and work together in order to promote unity and understanding between different denominations. Irenics is an important part of Christian theology, as it encourages Christians to come together and work towards a common goal of unity and peace.