The Eternal Now is the New Age representation of Spiritual Time, as outlined in The Book of Life. The Eternal Now is what we experience when we take a perspective on Creation from outside' the Space-Time Tube.
We speak of time in three ways or modes - the past, present and future. Every child is aware of them, but no wise man has ever penetrated their mystery. Paul Tillich
The Eternal Now is also a short set of sermons to seminary students by the Christian theologian Paul Tillich. The title of the package is taken from Sermon Eleven: The Eternal Now'. In that sermon Tillich is trying to understand Physical Time while also being aware of the existence of a Spiritual Time. He struggles with the contradictions of what he calls the Eternal Now (what we would call Spiritual Time) and the Temporal Now (what we would call Physical Time).
Tillich, Paul, The Eternal Now download