Hi mike,
Wow! So, because your small group teacher 'may' have made a mistake in understanding and explaining why Abram heard God's voice, you're ready to cut bait and run, huh? Listen, friend, I sat in a small group for quite a long time under a teacher who believed in alien life out there somewhere because they bought into this idea that the universe is just far too vast for the earth to be the only place where life exists. However, the fellowship pastor was dead on, as far as I could tell, about the truths of God. I don't usually hold small group teachers up to the same measuring rod as I do the fellowship teacher or pastor. But, like you, I would make my disagreement known when the subject came up. That's one of the things I appreciate about small group -- one gets to talk. I no longer participate with that particular fellowship, but I'm not ready to throw out the overall Baptist denomination because of these issues.
However, I'm not particularly beholden to any denomination. I look for a fellowship where the fellowship teacher teaches the truth. I'm not particularly concerned with what any particular individual of the congregation might believe or teach. Gosh, I've been on this site long enough to know that in pretty much every denomination there are people who don't understand the truth of God as I do. It becomes most apparent in the discussions of the creation. But, I'm not ready to throw out Christianity or fellowship because everyone doesn't see or understand things as I do. I understand that there are many, like Paul explains, who are weak in their faith. I understand Jesus' teaching that on the day of God's judgment there will be many who held themselves up as Christians and considered themselves to be doing the will of God, who will be turned away. I understand that being a believer and worshiping with a fellowship of believers is going to open me up to dealing with people who may likely be standing in that line.
However, having said that, I think it's fine that you choose to worship with another denomination so long as the leadership of that denomination teaches, believes and practices the truth. There are, of course, some that I would be very, very hesitant to join with. The catholic organization comes immediately to mind. Honestly, you won't ever find these bones sitting in a catholic worship service. For me, it's just rife from top to bottom, with lies and untruths about the things of God. But, there are a lot of people enjoined with that denomination. Based on that, my understanding is that the line of 'many' that Jesus is referring to is going to be a long, long line. I'm also not willing to enjoin with so called orthodox denominations for much of the same reason. I look for autonomous fellowships. One's whose hierarchy pretty much stops at the front door of the individual worship building. I look for a fellowship among those choices where the teacher or pastor teaches the truth.
I pray that God would guide you in this. BTW, I've been 'frowned' upon in fellowships that I have just turned my back and left. I can attest that it's not necessarily a bad thing if you're leaving for valid reasons.
Funny story, I guess. The new pastor (not the one that I mentioned above that seemed to be dead on in his teaching), that came to the fellowship that I'm speaking of above with the teacher who believed in aliens, did a small group study shortly after he came on board. The study was on Exodus and he explained that the building of the tabernacle came about in about 30 days after the Exodus. I think the point was about how quickly the Israelites then forsook God in making the golden calf. He called our attention to the Exodus chapter 40:17 and he read it and then continued on.
No one said a word. No hand was raised and I decided to let it pass. At some point later in his study he asked if any of us had any questions. I raised my hand and I said, well yes, my copy of the Scriptures in the referenced point says it was the first month of the 'second year'. This would mean that Israel had been in the desert for over a year before the tabernacle was constructed. Of course, then everyone else chimed in and agreed that their Scriptures said the same thing as I read.
Well, he flipped his pages and looked through the Scriptures and you could see that he was rereading it and then said, "I'll have to get back to you about that." It wasn't too long after this that I had corrected him on some other points of Scripture that I was told that I was being a 'distraction' and either had to agree to keep my mouth shut or get out. I left.
God bless you.
In Christ, Ted