interesting study
This thread caught my eye...
It is very interesting that there are to be heresies amongst the brethren, for the Lord tends to prove us through them...whether or not, I believe, we will study what some teach in our congregations and test the ideas or teachings.....1Co 11:19 For there must be also heresies <139> among you, that they which are approved may be made manifest among you.
God used this method with Israel also. De 13:3 Thou shalt not hearken unto the words of that prophet, or that dreamer of dreams: for the LORD your God proveth you, to know whether ye love the LORD your God with all your heart and with all your soul.
Peter continues this idea in his second letter. 2Pe 2:1 But there were false prophets also among the people, even as there shall be false teachers among you, who privily shall bring in damnable heresies <139>, even denying the Lord that bought them, and bring upon themselves swift destruction.
Heresies come fro the flesh, and are listed among other sins in Galatians.
Ga 5:20 Idolatry, witchcraft, hatred, variance, emulations, wrath, strife, seditions, heresies <139>,
I think the key to discerning what is a heresy is whether it is damnable or not. The word for damnable is apoleia, with the connotation of "the destruction which consists of eternal misery in hell" (Strong's quote)
Other Scriptures containing apoleia....2Pe 2:2 And many shall follow their pernicious ways <684>; by reason of whom the way of truth shall be evil spoken of.
2Pe 2:3 And through covetousness shall they with feigned words make merchandise of you: whose judgment now of a long time lingereth not, and their damnation <684> slumbereth not.
2Pe 3:7 But the heavens and the earth, which are now, by the same word are kept in store, reserved unto fire against the day of judgment and perdition <684> of ungodly men.
2Pe 3:16 As also in all his epistles, speaking in them of these things; in which are some things hard to be understood, which they that are unlearned and unstable wrest, as they do also the other scriptures, unto their own destruction <684>.
So for me, I believe based on the Scriptures, that the heresy has to be something which leads to destruction, or to put it bluntly, hell...that denies the very basis doctrines concerning salvation such that the doctrines provide a false hope at best.