As Kierkegaard said, then the moment is the atom of eternity.
Every moment is a challenge, something new, a unique presence, an eternal Thou, who speaks to us, and calls for us.
There is a crisis in the human life, when it meets the challenge in an incomplete way, when it doesn't listen.
It is absent in its historical background.
But we don´t want to see this as a crisis, and we close our eyes in order to escape from it.
That way we progressively become blind, and the crisis increases.