The phrase forms the basis of several ecumenical movements and united and uniting denominational traditions. It is also a common sermon topic on church unity. The phrase is the official motto of the Church of South India . The Latin version, Ut Omnes Unum Sint, is the motto of the World Student Christian Federation and the YMCA. The United Church of Christ has the same motto except for a change in the place of one word: "That they may all be one." Pope John Paul II published an encyclical under the Vulgate form this title, Ut Unum Sint.