Contemporary American culture feels more divided than ever in living memory. Sadly, the division has worked its way into our churches. Evangelical leader Timothy Dalrymple contends that Christians, once united by faith, "are not merely dividing but becoming incomprehensible to one another."The disunity does not bode well for the Church's mission. In the hours before going to the cross, Jesus asked His Father to make His followers one "so that the world may believe that You have sen...