Okay, two things:
(1) I agree that the Word of God is objective. I also KNOW that there are many perceptions as to what the OBJECTIVE WORD God gave us means. I also KNOW that just because someone has a perception/opinion of what it means and a whole lot of Bible school degrees behind their name, it doesn't mean they have the correct perception/opinion. In fact, quite often, they don't, because they had to be brainwashed/indoctrinated into certain views to earn their degrees and build/maintain their credibility.
In contrast, Jesus didn't have to earn degrees and He wasn't about to get indoctrinated into the religious system that the "qualified" were pushing. So, Jesus' correct interpretation of the Scriptures was often very different than the religious-elite's ill-informed perception that theirs was the "correct view" and therefore He was a heretic and a blasphemer. Is that not what the OBJECTIVE Word of God reports? And, just to be clear, because of the things that Jesus taught, Jesus couldn't be labeled a blasphemer without also being labeled a heretic.
(2) RC Sproul and company have a very definitive view to support: reformed theology. They consider their view to be orthodox Christianity over the descendant churches (orthodox and catholic) that were responsible for what they base their orthodox claims on. Worse, those "council" rulings are long after the written Words of what later became canonized as Scripture were shared and treated as Scripture by the original churches AND long after the visible church gave itself over to world politics. The fact that RC Sproul's theology attempts to prove that the Holy Spirit ceased to give gifts in contrast to Scripture and cites human experience when his lacks the Scriptural ability to prove his point, should lead one to be careful what they believe that he says, no matter how genuine he may sound. I could go on, but I think you get my drift.
(3) So, CT could say that based on reformed calvinistic theology there are a lot of heretics. But, who decided that reformed theologians of the calvanistic flavor have the right to determine what is orthodoxy and what is heresy? Oh, yeah, they decided they do! I don't subscribe to their lies, largely because God has and is continuing to show me the Truth which includes rescuing me from many of the lies people like that had indoctrinated me with. It is just like Jesus says will happen in John 7:17-8, John 8:31-2, John 14:26, and John 16:13 in the Gospel of John alone. I don't have any agenda apart from doing God's will and no brand name to support. If I had been willing to allow the indoctrination, then I certainly could have had all that stuff. I'd rather have God!