Ok, let's start here then. Technically, the text doesn't say that the wolves "keep the masses in the wide gate." What they actually do, if you follow the natural flow of the analogy, is prey upon those who do not stay on the straight and narrow. They have no power to "keep" anything, but they will prey upon those who stray from the true path.
13 Enter ye in by the narrow gate: for wide is the gate, and broad is the way, that leadeth to destruction, and many are they that enter in thereby.
14 For narrow is the gate, and straitened the way, that leadeth unto life, and few are they that find it.
15 Beware of false prophets, who come to you in sheep's clothing, but inwardly are ravening wolves.
Ah... I see where you are going now, at least as far as the direction. Ok, then first off tell me exactly how you are interpreting John 8:51, more particularly how you would elaborate on it, as opposed to how they would not
51 Verily, verily, I say unto you, If a man keep my word, he shall never see death.
Here, too. How exactly would you define the words "bearing fruit unto perfection"?