The doctrine of the incarnation suggests that Christ is necessarily like us in some respects, and also unlike us in others. One long-standing debate in modern christology concerns whether Jesus’ human nature ought to be regarded as ‘fallen’ – as conditioned by the effects of the Fall – despite the fact that he himself remained without sin (Heb 4:15). Is fallenness a condition which is necessary in order for Christ to sympathise with human beings, to represent them, and so to reconcile them to God? Is fallenness logically separable from sinfulness? Recent literature has suggested an increasing intractability on both sides of this debate. This article seeks to bring clarity to the question of the fallenness of Christ's human nature by identifying areas of common ground between advocates and opponents of this position. It engages the work of representatives from both sides – Oliver Crisp in opposition and Karl Barth in support – in order to determine the different ways in which they approach the matter of Jesus’ fallenness and impeccability, and to locate points of potential consensus. Crisp argues that fallenness cannot be detached from sin and guilt – i.e. Augustine's notion of both original sin and original corruption, in which sin is an inevitability. Barth, on the other hand, is critical of the Augustinian view and takes as his point of departure Jesus’ unity and sympathy with fallen creatures. Yet the fallenness of Jesus’ humanity does not mean that sin was a real possibility for him.
In this article the christological doctrine of anhypostasis – a way of speaking exclusively of human nature apart from its hypostatic union with God the Son – is suggested as the primary way forward. Advocates of the fallenness position seem to have this qualifier in mind when describing Jesus’ human nature as ‘fallen’: it is true of the assumed nature only when considered in itself, apart from the hypostatic union. There are logical and historical grounds for opponents to accept fallenness strictly on these terms, as well. Beyond this, I argue that anhypostatic fallenness should be acceptable to both sides because it is never without a corresponding sanctification of Jesus’ human nature by its encounter with God. Though Jesus’ humanity was conditioned by the fall, by virtue of the communicatio gratiarum it was not left in a state of peccability.