Here are some things that I think we are in danger of when we truncate the gospel like this post described.
1. We are in danger of preaching a gospel that is entirely reduced to a narrowly-defined ‘need-solution’ formula, open to charges of being man-centred, and which obscures lots of things that are highly significant for faith and life.
2. We are in danger of disconnecting the gospel and the christian life from creation. At a bare minimum the ‘shape’ of the biblical storyline (of which the gospel is the controlling centre) is
A. Creation > B. Fall > C. Redemption > D. New Creation
A truncated gospel often misses out A. and D. (or reduces them beyond recognition). Since discipleship and christian living flow from the gospel, a gospel that has been divorced or distanced from creation will tend to result in the same kind of discipleship. Such gospel preaching is ill-equipped to tackle problems such as those caused by individualism in the wider culture or those caused by various kinds of neo-gnosticism in the church.
3. We are in danger of giving ‘law’ a primacy that rightly belongs to grace. A truncated gospel starts with ‘the problem,’ and thereby (ironically) frequently defines the problem inadequately. There is a difference between defining sin as a violation of a naked law or standard and defining it as violation of a law given in the context of extravagant unearned kindness. A truncated gospel detaches God’s prohibition to Adam in Genesis 2 from the surrounding context, which is all lavish gift and favour.
All of this tends to miss the way in which, in the creation story and indeed throughout all scripture, grace and ‘gift’ are primary, and provide the context in which both law and sin are best understood. This skews understandings of Christ’s work, but also (therefore) significantly skews understanding of the nature and character of God and the nature of our covenant relationship with him.
4. We are in danger of reducing Christ to a mechanistic solution to our problem of sin. A gospel disconnected from creation and new creation will preach a Christ who is disconnected from those things too. A truncated gospel will contain a truncated Christ. It can feel like Christ ‘enters’ the story only in response to our sin and mess, when in reality he is the one through whom and for whom all things were originally made. A truncated gospel doesn’t ‘need’ Christ to be any more than that, just as it doesn’t ‘need’ the vast majority of the material recorded in the four gospels.
And there’s more, no doubt.