Eternity

We possess our being, the philosophers say, successively. Not so God.  All that he is, he possesses in one single act of being.  Eternity does not mean everlasting time, time open at both ends, so that however far you go back into the past there is no beginning, howver far you go forward in the future, there is no end.  Eternity is not time at all.  It is God's total possession of himself.
by Frank Sheed "Theology for beginners"