For two millennia Christians have assembled on the “day of the sun” to celebrate the liturgy together. But why do it? Why structure one's life in such a way that participation in ritualized religious activity is a fixed point in the weekly rhythm of one's comings and goings? The project of this essay is to identify reasons to engage in such activity that emanate from the Christian ethical vision. Fundamental to this vision is a contrast between an ethic of proximity, (...) which enjoins us to attend to the needs of those near and dear, and an ethic of outwardness, which enjoins us to both attend to and open ourselves up to the needs of those who belong to various out-groups. The Christian ethical vision enjoins an ethic of outwardness. A close look at the liturgies of the Eastern Christian tradition reveals the ways in which they express this ethic. (shrink)