It is quite true, particularly when referring to anything mystical or spiritual, that when we think we understand, then we most likely don't. Krishnamurti said something similar when he advised against coming to conclusions: avoid conclusions or you will have nothing more to learn.
Is there a 'Now?' - perhaps not because for there to be a 'now' there has to be a past and a future and for the mystic there is no past - it doesn't exist, it can't be 'real' because it was transient - illusory (Maya) therefore not 'real'. The future has not happened so can't exist, therefor the present is transient - part of the illusion of time: past present and future.
We can't look at the 'Now' - we can only 'look' at the present. Therefore, I doubt that it is the same now that 'doesn't exist.' The 'Now' doesn't exist in time so Jenkins must be telling us to look at what is ...what is in time i.e. a tree is a tree - nothing more etc. Look at what is in the material world and that is all it is...it is, so lets not make conclusions arising from our conditioning from a past that no longer exists and cannot reveal Truth or Reality via our illusory senses.