An enlightened person has gone through all the 4 stages of samadhi and achieved complete vairagya, detachment from all worldly things then one’s own ego, sense of self as separate from the whole divine universe. At that point, the human agreement of reality falls away, and we see Reality, Satya, Truth, That Which Is. The convention of linear time also drops away, so that past, present and future are perceived simultaneously. This may have been momentarily glimpsed on the way of the levels of samadhi.
Although it is impossible for those not enlightened to imagine what that means, nevertheless there are a very small number of beings here to help us who are able to cope with all that information and still appear “normal.” True sad/satgurus are among those beings. There are others who do not take on the job of guru but find other ways to help in the universe (not just Bhu Lokaa/Earth Plane.)