In Jayber Crow, Berry's characters show what it is to belong to a community, by which I mean more than the welcome and affirmation typically communicated by the word today. To belong to a community is to be at its disposal, to have given over all you have to be used for whatever your community needs. It is to be implicated substantively, not just sympathetically, in the ups and downs of a place and its people. It is a submission of yourself—your identity, your interests, your ambitions—to the needs of those to whom you're bound.
The book's heroes reject the notion that you make your own identity rather than receive it. They know and embrace who they are through their connection to things larger than themselves: their community, the land, the march of history, the mysterious purposes of God. They find joy, peace, and freedom in accepting their subsidiary status.