I've been wrestling with whether or not I should talk to my pastor about all the heresies (albeit minor) he preaches or his abysmal understanding of Koine Greek and Hebrew. I was being nagged to do so because I thought I had a responsibility to stand up for truth. However, the Lord reminded me of Matthew 7:6.
When someone who is or might be a seeker of truth errs, we defenders of Truth do have a responsibility to meet their need. However, when an enemy of truth wishes to do battle, there is no point to engaging him. (The exception would be a public spectacle where onlookers then have the chance to hear truth.) Such a fool only desires to inflate his own ego, preach his own perversions, and worse, he may choose to "turn and tear you to pieces." Such an endeavor would be pointless, advance no truth, and only harm you, the believer.
Today's Western church is filled with such truth-haters. They may indeed understand some of the basics of the Gospel Truth. They may even be saved. Salvation, though, need not guarantee a truth-seeker, and a church-goer may not be interested in loving correction. As a lot, today's pastors are the worst. Trained into arrogance and welcoming pastor-worship, they are hard-hearted and guarded against many Biblical truths. To engage them in "debate" is without Godly merit, by and large. As a rule, they allow no room for a more knowledgable or better educated layman, and they'll defend their god-like status to the death. Putting forth the truth to such as these is nothing more than throwing pearls to swine.
I will not be engaging in doctrinal or hermeneutic battle with my pastor. (I've naively made that mistake too many times.) He shows no signs of interest in correction or truth, should it run counter to his preferred heresies and or expose his incompetence. Having said this, I'm certainly on the lookout for signs of openness to the full, Biblical truth in him. Should such signs emerge--I won't hold my breath--I'll be the first to promote Biblical truth in a loving, forgiving manner.


Heresies
My pastor does indeed promote all sorts of heresies. Most are minor, if heresies could be described as such. Many, though, if followed to their logical conclusions, run the risk of jeopardizing salvation for those so following.
For example, one of yesterday's heresies was a claim that holiness equates to healthiness, suggesting poor health equated to sin. I am reminded of the blind man who was not blind due to his own or his parents' sins. The pastor's message clearly violated this precept. He came to this odd conclusion based upon a gross abuse and misunderstanding of the Hebrew word for holy. He then wrongly discerned (how?) its derivation, inserting a false lingual relationship between holy and healthy.
In nearly utter failure to understand Greek [too]--all he'd need to do is read Strong's, really--he reversed a derivation yesterday, too. In John 15:2, the word "prune" or "purge" is used (depending upon your version). In John 15:3, the word "clean" is used. The former derives from the latter, yet the pastor insisted the derivation was the reverse. This leads to all kinds of problems. He kept insisting that whenever "clean" was used, it implied "to cut" (as in pruning). This is far from the truth. Rather, the use of "prune" implies "to clean". Sure, the Lord wants to prune us, but this happens after we are cleansed of our sins in the eyes of the Judge. First, we are cleaned of sin insofar as our judgment will be concerned; then, as a cultivated branch, we are routinely pruned, or further cleansed, of recurring sin.
One of the implications of his poor understanding of Greek and his healthy/holy heresy, from his poor understanding of Hebrew, is that the pruning of all sin is required prior to salvation. This is the same message as the Judaizers: one must first be obedient to the Law, and only then may one accept salvation. In other words, this implication is a works-based salvation, in direct contradiction to countless Biblical precepts and passages.
I doubt he believes in this latter, salvation-affecting heresy were he confronted with it. However, I also doubt he would be able to see how his incompetence at Greek and Hebrew carries the potential to cost others their eternal salvation. He's just not bright enough, in my opinion. What, then, is he to do? Is there an intellectual requirement for preaching and teaching? Yes and no.
A preacher or teacher should not stretch beyond his ability. My pastor is surely capable of teaching the basics of doctrine, but he should stick to these basics. (To be honest, it's not like his sermons are intellectual stretches, but they still stray beyond his meager abilities.) He's just not as bright as he thinks he is--his ineptness at Greek and Hebrew is evidence--nor need he be were he to restrict himself to his competencies. On the other hand, were he preaching from Divine inspiration, the Lord would handle all the nuances, regardless of any limitation in the pastor's abilities. However, just because you're a pastor doesn't mean you always speak in the Spirit; being a pastor, though, he will be held responsible for those he's leading astray even if only by his incompetence.