I like Edwards' simplicity in writing, it's especially nice after reading more difficult writing styles.
But, I felt like Gene was, in places, arguing that the truth needs not to be defended (if you don't like the word "defended," because of negative associations, then use the word "upheld" or "preached" or "exhorted" or etc.). That laymen or elders or preachers don't need to watch the flock, to keep the sheep free from lies, free from wolves, free even from misguided sheep. That instead of being gentle in rebuke, that, in fact, it's better to do nothing.
Just do nothing.
But, again, I don't think this is biblical. I would point to the pastoral letters, also to Paul's rebuke of Peter, also to Nathan's rebuke of David, and etc. Granted, the less training or less learned we are in the Bible, the more we should be quick to listen and be gentle. But there comes a time when truth needs to be upheld, where wolves, or misguided sheep need to be rebuked, sometimes banned from fellowship because of their denials of truths Jesus preached, that God has spoken in His word. (This is where we need to be clear about essentials, non-essentials, the importance of different truths).
Why?
Because sheep are sons and daughters of God. But how will they draw nearer to God if they don't know His truths? How will they remain comforted by the Spirit of Truth if they are led away from the Truth?
So saying all that, we need to be REALLY, REALLY, REALLY humble when it comes to these things. It doesn't mean we have to be limp-wristed cowards. It does mean we need to draw close to God, and with all that we are cry out to Him, knowing that these things are not trivial. We deal with both God's word and the souls of mankind. Eternity is in the window, this isn't court tv. And we deal with God, our Creator, our Lord, the Judge of all, are we gonna be arrogant and quick to throw brothers and sisters into hell over small truths or ignorance? NO!
Nevertheless, we need to come to the Spirit to gain wisdom, love, humility, strength, and (even though the word is soooo abused) discernment. Are we certain of the truths we are "defending?" Are we certain there isn't just a misunderstanding? Are our motives basically good? Are we doing this, in love, because we love God and love His people?
Or are we doing this from a feeling that only we can guard God's truth, and only we have it, and only we have wisdom, and etc.?
So before we ever defend truth, let us come to God as broken vessels in prayer and seek Him in His word, ask for counsel from better and wiser Christians, and then pray some more, and then to trust in God's leading hand, walk with Him, trust in His promises, and act in gentleness, love, truth.
Always, always, always, begin in gentleness.
But please, don't ever just do nothing. At least pray and read the word and seek counsel.