Do you, when speaking informally in your own words, talk of particular other people as ‘holy’, or say you desire ‘holiness’? Christians today vary widely on this—from omission of the word ‘holiness’, through assorted hesitations, to unselfconsciously terming certain others holy and voicing a wish to be holy themselves. People may often have deep down a lot more inklings regarding holiness than commonly become explicit. But faced here with an invitation to consider how ‘our perceptions’ of holiness relate to ‘our perceptions’ of sin, it is wise to note that initial reactions on the former front as well as the latter can prove less than clear-cut. In my own case, I tend to be fairly reticent in singling out specific individuals as markedly holy, while quick—amidst theologizing—to state that all are called to holiness, and that some growth towards it is widespread.The central ideas in this article are the possibility for humans of close relationship with God and alignment with God’s purposes; the primacy in this of God’s gracious outreach; yet the place also of human personal responsibility. These ideas lie at the heart of my account of holiness; and they help assessment of statements about holiness as ‘virtue’, or as ‘wholeness’. Notions of sin are correspondingly clarified. And light is thrown—so I think—on some issues evident during reflection on engagement within history, including in political arenas.From biblical times onwards, ‘holiness’ has been applied to certain collective referents: specially ‘People’ and ‘Church’. ‘Sin’ terminology too has had collective referents, whether defined religiously or by other social concepts. The immediate focus of this paper is on individuals, and ascriptions of holiness or sin to them. But such focus spans not just any particular individual’s private concerns, but also the individual’s stances vis-à-vis broad social affairs and structures.