The knowledge that the world is ancient, is from Ohr HaGanuz, light that was revealed only to the true Tsadik.
Today, the knowledge about the history of the world, is coming from science, and proves hard to handle. It has made the world into a place of heretics. But it is possible to be the exception, to accept the truth from science, to see that it is Ohr HaGanuz, and therefore to expect the redemption. Consider:
When Rashbi was going to leave the world, a great light appeared, from the Ohr HaGanuz, and he knew.
When the Arizal was going to leave the world, he similarly received from the Ohr HaGanuz, and he knew.
Chaim Vital did not know, but he also merited to receive from the Ohr HaGanuz, and he knew, and saw the coming of Moshiach.
And Ramchal merited to receive from the Ohr HaGanuz, and he knew, and saw the Yichud of HaShem.
And the GR"A merited to receive from the Ohr HaGanuz, and he knew, and saw the Yichud of Moshiach.
Only very few realize that this light, this knowledge, is from Ohr HaGanuz. The "Tsadikim" will reject it, fight it, in the name of Torah. They are called "Tsadikim," but they are not.