… if the approach one uses to attempt to retain a congregation is postmodern, i.e. "I deny the validity of your argument therefore you are wrong and I am right and you can't leave"…
I don't see that as postmodern, but "traditionalism." Post-moderns are more likely to say, "I see the validity of your arguments and I also see the validity of the arguments on the other side. Neither of them are wrong or right. We should be able to stay together."
It's the traditionalists who seem more likely to use the language of "right" and "wrong" -- without areas of gray.
Try reading all that Peter wrote, rather than the snippet you copied. A traditionalist does believe in right and wrong, but also believes in making a case for his position. A post-modernist, believing that talk of truth is just a power play, merely asserts. "I assert that you are wrong. Therefore you are wrong."
Now, there is another post-modern strategy, that is to deny that we can know anything definitively. Or, more correctly, the only thing we know for certain is that we are never able to know anything for certain. Therefore, the one who claims to know something is the one in the wrong. Of course, a power play must follow. "All things are relative but the ELCA constitutions as infallilibly interpreted by the Secretary of the ELCA."
From Mark Allan Powell in Loving Jesus:
I think that worship is the essence of spirituality. But worship, like joy, can sometimes be superficial. In Matthew 15, Jesus tells the Pharisees that they worship God with their lips while their hearts are far from God. The Pharisees, of course, are often the fall guys in this Gospel and they seem to stay in trouble the whole time. Still, say what you will about the Pharisees -- the one thing they never do is doubt. They are always certain about something. They are the "God said it. I believe it, that settles it" people of the Bible. It never occurs to them that they might have overlooked something or misunderstood osmething. As a result, they are often wrong, but they are never in doubt.
By contrast, disciples of Jesus worship and doubt at the same time -- and Jesus doesn't call their worship superficial. It might be going too far to say that doubt is a good thing, but I do note that Jesus rebukes anyone for it. I am tempted to believe that just as fear seasons joy, so doubt seasons worship. Joy without fear becomes shallow; and worship without doubt can be self-assured and superficial. Fear and doubt are not good things in themselves; but they do keep us grounded in reality. (p. 123 italics in original)
Certainty can be detrimental to an honest faith. Is that just a post-modern position, or a biblical truth given through the comparison of the certainty of the Pharisees vs. the waverings of the disciples?
Hebrews 11:1 (ESV)
Now faith is the assurance of things hoped for, the conviction of things not seen.
James 1:5-8 (ESV)
If any of you lacks wisdom, let him ask God, who gives generously to all without reproach, and it will be given him. But let him ask in faith, with no doubting, for the one who doubts is like a wave of the sea that is driven and tossed by the wind. For that person must not suppose that he will receive anything from the Lord; he is a double-minded man, unstable in all his ways.
Mark 9:24 (ESV)
Immediately the father of the child cried out and said, “I believe; help my unbelief!”
Jude 1:21-23 (ESV)
keep yourselves in the love of God, waiting for the mercy of our Lord Jesus Christ that leads to eternal life. And have mercy on those who doubt; save others by snatching them out of the fire; to others show mercy with fear, hating even the garment stained by the flesh.
The role of doubt in the faith life of a Christian is complex, much too complex to sum up as the virtue of doubt versus the vice of certainty.
Certainty can be detrimental to an honest faith. Is that just a post-modern position, or a biblical truth given through the comparison of the certainty of the Pharisees vs. the waverings of the disciples?
Was the wavering of the disciples in fact a virtue - a praise of their having a good, honest doubt ridden faith. Was it being certain that made the Pharisees wrong? The Pharisees were certain, but they were also certainly wrong about a lot of things.
Certainty becomes a vice when it trusts in its own wisdom and completeness; shutting itself off from further learning or correction. In fact, I am not overly fond of the term certainty in regard to faith - I am more comfortable with confidence. I am confident that some things that I "know" by faith are true. I could, I suppose be wrong, but I am not going to loose any sleep over that or suggest that anything that I "know" must be wrong because doubt is the essence of faith.
Doubt is not the essence of faith but its antithesis. A wise man will be willing to say, "I don't know," or "I'm not sure." But I would not count it wisdom to doubt that the sun will rise in the East tomorrow, or to doubt that my wife has been, is, and will be faithful to me. Nor would I count it wisdom to doubt what God has said in the Bible.
Whether it is "post-modern" or just our contemporary era, but it has become commonplace to value the journey over arrival, the quest for knowledge over the acquisition of knowledge, and to doubt old truths and embrace with fickle enthusiasm any new suggested truth that comes along while eagerly awaiting the next new iconoclasic truth. How disappointed some will be upon arriving in heaven to learn that it is a destination, not merely a way station upon their never ending quest for the next new thing.
Dan