Results and rewards are concepts which deal with the past. Effects are more akin to new possibilities, new opportunities, new openings, all of which are by way of being thresholds. Thresholds always deal with that which is to come, with the future. Also, thresholds are not time constrained in anyway. We encounter the threshold in time, but it has always been there waiting for us to get to a point where we could see it.
Thresholds are stations in consciousness.
They signify the approach to an opening between two places in consciousness, not between two places in time at all. Thresholds are also more than the usual points of development that we know as rites of passage in a person's life. Thresholds are more internal, more esoteric points in development. They are openings in consciousness. They are steps in the inexhaustible, unfolding revelation as it gradually and sequentially dawns upon the disciple's awareness.