Based on outward appearances at any given moment, it may be difficult to tell genuine believers (connected in vital unity with the True Vine) from those who have merely attached themselves to some of the trappings of Christianity. However, time will tell the difference, because the genuine believer attached to the True Vine will bear fruit. A false professor appears to be attached but does not bear fruit, and it’s the lack of fruit that shows a branch is not receiving the fruit-bearing energy that comes from attachment to the Vine. Regardless of how attached this branch may appear to be on the surface, it is lacking the one absolute evidence of attachment—fruit! That “branch” should not console himself with false notions that he is attached, because his lack of fruit bears condemning evidence against him. In this case, the branch was never really attached in the first place. The metaphor (or allegory) of the vine and the branches can only be pressed so far.