"Religion, as the term imports, began after the Fall; for it indicates a previous apostasy. A remedial system is for a diseased subject. The primitive man could love, wonder, and adore as angels now do, without religion; but man, fallen and apostate, needs religion in order to his restoration to the love, and worship, and enjoyment of God. Religion, then, is a system of means of reconciliation—an institution for bringing man back to God—something to bind man anew to love and delight in God"
Alexander Campbell, The Christian System, Gospel Advocate Company (2001), p. 20