In the classic film Monty Python and the Holy Grail, the King of Swamp Castle issues an appeal for unity: “This is supposed to be a happy occasion. Let’s not bicker and argue about who killed who!” It’s become a classic line used to poke fun at people who are trying to bring peace and unity without showing any understanding of the reality of the situation or the depth of hurt that’s been caused. While we might never end up being quite as absurd as Monty Python, Christians can sometimes talk about unity a little like this. That is, we can treat unity as some ideal state where everybody just gets on, no matter how deep our differences are and no matter what hurt has been caused. And yet—unity really matters. Christians are called to unity. Christian unity is anchored in the truth of the gospel.