John 12:27-50. The Public ministry of Christ, recorded in Chap 1-11, has now come to an end and Jesus makes his final plea to Israel as the curtain closes. As Isaiah predicted, they would not believe, and subsequently could not believe as their hearts were hardened. We see this principle with Israel of Old, Israel in Jesus day, Pharaoh before Moses, in Rom 1: and perhaps in the lives of people today. How crucual to believe while you have the light.