There are many forms of unity. People can be unified by similar situations and backgrounds, or by the enjoyment of a certain celebrity, team, or activity. But the unity of Christians is unique in that it is based on something supernatural that transcends mere appearances or surface-level similarities. In this expository message from Eph. 2, we learn that we are united in spite of significant differences, an important factor in compelling community; sermon begins at about 19:30.