Every pastor knows that there are certain Sundays in which attendance will be high. Christmas and Easter, for example, will draw those who identify as Christian but generally find other things a higher priority at church time on Sunday mornings. Another day in which visitors are expected is Mother’s Day, when dutiful children make Mom happy by going to church with her before brunch. Some churches have a liturgical calendar that establishes themes for each Sunday accross the denomination. But non-liturgical pastors tend to strategize their sermons on ‘Visitor Sundays’ so that they appeal to irregular attendees and so that ...