We are part way through the Week of Prayer for Christian Unity (Jan. 18-25), an annual observance with over 100 years of history. Organized by the World Council of Churches, the week is a call for Christians to remember Jesus’ prayer for his disciples that “they may be one so that the world may believe” (see John 17:21). This year the theme is “Abide in my love and you shall bear much fruit” (John 15:5-9). I have to say that this is tough…