Sequel to the New Testament? Year 70AD
If there was ever an event that could be seen as a sequel to the New Testament (and without which, It simply doesn't make proper sense), it would be the fall of Jersualem and its Jewish Temple of animal sacrifice in the year 70AD. Jesus of Nazareth had promised 40 years prior (Matthew 24) that its destruction was inevitable, despite its immense prestige throughout the ancient world at the time of Jesus. Even his disciples had called Jesus' attention to the Temple in complete awe of its majesty -- especially after being newly (and fantastically) renovated.
But despite the awe and wonder it provoked throughout the known world, Jesus knew the corruption and decadence that presided over it, and how that corruption had already sealed its doom. For the disciples, though, that such a wonder of architecture (not to mention, a political tightrope) seemed inconceivable. In the same way that people simply could not compute that the ship, The Titanic, could ever sink in more recent times, so also, Jesus' notion of how the Temple would eventually come to ruin would have seemed to them as impossible. But Jesus was adamant. No matter its seeming indestructibility, it would find its own destruction. .
In fact, when Jesus said to his disciples: "If anyone says to this mountain, be removed and be cast into the sea" (Mark 11:23), the "mountain" he referred to was the immense Temple that stood before him (and all the corruption and compromise that presided over it).