“The Virgin birth at the opening and the empty tomb at the close of Jesus’ life bear witness that this life is a fact marked off from all the rest of human life, and marked off in the first instance, not by our understanding or our interpretation, but by itself. Marked off in regard to its origin: it is free of the arbitrariness which underlies all our existences. And marked off in regard to its goal: it is victorious over the death to which we are all liable. Only within these limits is it what it is and is it correctly understood, as the mystery of the revelation of God. It is to that mystery that these limits point — he who ignores them or wishes them away must see to it that he is not thinking of something quite different from this.”
Karl Barth, Church Dogmatics I/2: page 182.