“Shun,” περιιστασο, means leave to the side, avoid, or stand around, surround, enclose, and press, not giving way. Thus two thoughts are given in these words. Avoid empty utterances, that is, disputes in which there is much noise, many voices, and many exclamations, but no sense. Also, enclose novel utterances, that is, hedge in new teachings so that they do not spread, as one encloses a place where a contagious disease has taken root. Do not only enclose them, but also press them, so as to suppress them.
Saint Chrysostom says: “The matter is not limited to this, that is, merely giving forth new sounds. Once something new has been introduced, it constantly produces καινοτομιας, new divisions in teaching and in those who follow it. The one who has gone out from the quiet harbor, that is, from the teaching held by the Church, wanders without end and will stop nowhere.”
Therefore, Oecumenius adds: “Drive away everything introduced into preaching from new inventions as contagious and defiling. Press it so that it may not spread and may cease.” The latter thought accords more closely with what is said immediately afterward.
“For they will proceed further in ungodliness,” επι πλειον γαρ προκοψουσιν ασεβειας. That is, they will advance, move forward, and give themselves to a greater measure of ungodliness, if, of course, you do not cut them off, enclose them, and constrain them.
On the one hand, novelty attracts attention and widens the circle of those who hear and give heed. On the other, the production of one novelty irritates the impulse and need to produce new innovations. New divisions, that is, new teachings, naturally multiply, as polyps multiply when cut apart.
“If something adulterated and counterfeit is introduced into the realm of faith, it goes farther and farther, from absurdity to absurdity, and daily receives greater increase” (Oecumenius).
If truth spread in this way, piety would spread through it. Yet what spreads is novelty and, for that reason, falsehood. Falsehood is always from the devil, the first fighter against God and the first teacher of opposition to God. Therefore, through the spread of innovations, only ungodliness will spread.
Innovations damage faith. Since they attract the attention of believers by their novelty, they also damage believers and cast them into ungodliness. They place them in an improper relation to God, instead of the piety, that proper relation to God, in which faith holds them.
The innovation itself is ungodliness, because it sets its own invention above God’s decree in His word. It is a repetition of the act of the first ancestors. By weaving a new interpretation into the commandment from the words of the father of lies, they fell into extreme ungodliness and cast the whole human race into it.
Since innovation in faith is such by nature, it always and everywhere produces fruit according to its kind. That is, it casts into ungodliness and spreads it according to the measure of its own spread.