"...personhood as ‘ecstatic’, in terms of a going out or being drawn out of oneself by the Spirit into the life of Christ, a life lived for and with others. So we might also say that persons are ‘eccentric’, that they find their lives in the lives of others. Enter the man curved in on himself, who stubbornly refuses to go out of himself and smugly stays at home in and with himself. He is ego rather than ec-centric, finding his life in and living his life for himself... It’s a familiar image, and a fitting one, the photonegative of the man whose life is found in relationship. In this view, sin is a violation, perversion, and refusal of the very relationships which constitute us. Eberhard Jüngel puts it succinctly, calling sin "the urge towards relationlessness and dissociation". And the sinner? "The sinner is, to put it simply, a person without relations, with no relation to God or to self".
--Matt Jenson, The Shape of Our Sin - at The Other Journal
Martin Luther - "Our nature...is so deeply curved in on itself that it not only bends the best gifts of God towards itself and enjoys them...but it also fails to realize that it so wickedly, curvedly, and viciously seeks all things, even God, for its own sake." (source)
1 John 3v23: "This is his commandment, that we believe in the name of his Son Jesus Christ and love one another." The gospel comes with the life-giving lavish love of divine command enacted at Calvary to uncurve us from our devilish introspection and instead look to Jesus, In becoming Jesus-centred we also become other-centred.