'The liquidation of sin "once for all" in the datable, localizable event of Golgotha...presupposes the teaching of Genesis. Twice the same structure, instituted by God, has come into play: the organic solidarity which united the members of one humanity under its Head, and gives him power to be its representative. On both occasions it had to be a real act, otherwise the second Adam would not have been able to put right the work of the first. The obedience of the unique Man on that Good Friday has set free a great multitude because the evil which held us all enslaved had its origin in history, and we all contracted it through the offence of the first man, on that first evil day. For historical sin there is a historical redemption.'
Henri Blocher, In the Beginning, p.170