That is not the case at all. Most of us believed in the reality of the gospel of grace long before we thought that substitutionary atonement was an objective fact, and frankly, we will believe in it a long time after we have given up the notion that it's an objective fact. So let's look at postmodernity and see what there might be that Christians can appropriate. Look at Jacques Derrida's use of language and deconstruction. That is, those who have power are always in the position of deciding what is and is not knowledge.
Modernity is a regime of thought if ever there was one.
And this is the second point we Christian intellectuals have to celebrate about the postmodern turn. Clearly one of the most useful thinkers for Christians to explore and investigate is Emmanuel Levinas. This extraordinary Jewish thinker, who died on Christmas Day 1995, is a gift of grace to Christian intellectuals living in the postmodern turn. Levinas takes seriously the reality of God and the significance of the Other. And that is what it means to be an evangelist.