Realisation is both of the view seen, but also of the viewer, the witness, the one who sees – realising who and what that is. How does it happen? By our own efforts, we can only present ourselves as cleanly and attentively as possible – wait upon the Lord, and watch, and pray (Mat.26,41). Realisation comes, not at our bidding but, as it were, from the other side, like sunshine breaking through the cloud, or screen, of our ordinary, impure and dim perception (1Cor.13,12).