Here union means deification. At the same time, while intimately united with God he knows Him only as Unknowable, in other words as infinitely set apart by His nature, remaining even in union, inaccessible in that which He is in His essential being.
Lossky articulates the apophatic core of divinization theology: theotic union does not dissolve divine transcendence but intensifies the paradox of intimate unknowing.
, Modern Orthodox Thinkers: From the Philokalia to the Presentthesis