It is one thing to hold strong theological convictions. It is another matter entirely to not know which issues are non-negotiable core essentials. As the old saying goes–in the essentials unity and in the non-essentials charity. We would all doubtless agree that the gospel is non-negotiable, as are doctrines like the deity of Christ, justification by faith, and the inspiration of Scripture. We would also reject beliefs which float on the loony-fringe of the faith, such as numerology, open theism, and name-it-claim it.
Where we run into problems is those areas where true believers with firm convictions differ. For example the time of the rapture relative to the tribulation. I happen to not hold to the dispensational scheme at all, having long-since opted for a preterist amillennial view of eschatology. I do not believe in infant baptism. I do not speak in tongues or hold to the Pentecostal doctrine of the baptism of the Holy Spirit. Of course there is the Calvinism-Arminianism debate, and you all know which side of the fence I stand on there.
To be sure I believe my dispensational, Pentecostal, covenantal, and Arminian brothers are sorely mistaken. But to call them heretics would be a real mistake. Heresy is something that historically has gotten you burned at the stake. I gladly fellowship with genuine believers who agree with me on the gospel and what we mutually consider to be the core essentials of the faith. I do not believe things like Arminianism and Calvinism can be resolved into a sort of hybrid Calminianism. Oil and water do not mix, no matter how hard you shake the bottle. But the basis of Christian fellowship is not verbatim agreement on non-essential doctrine. If you believe the gospel and the word of God I will give you the right hand of fellowship any day and twice on Sunday.
Some of you younger studs need to ratchet down your misplaced zeal a couple notches and stop bashing the brethren. Disagree vigorously over an open Bible, but do not label someone as a heretic just because they do not ride the same hobby horse as you. There are already too many morons on youtube spouting idiocy into the webcam from their trailers or studio apartments.
Don’t be one of them.