When I was a teenager, I had temporarily attended the "church of Christ" and they taught me that ONLY "their" church is the "true church" and they quoted Romans 16:16 in an effort to support their claim because it mentions the specific words,
"churches of Christ" in that verse. Such a silly claim simply based on a name. They also proudly claimed they were not a denomination. I guess those who attend the church of God denomination could also try to use these verses (Acts 20:28; 1 Corinthians 1:2; 10:32; 11:22 etc..) in an effort to make the same claim that ONLY they are the "true church" based on the name
"church of God." Anyway, I had temporarily attended that church with a friend and his aunt, and she was a very devout and thoroughly indoctrinated member of the church of Christ. After I stopped attending that church, a number of years went by and since then, I had received Christ through faith and was now a born again Christian.
As a new believer years later, I attended my friend's birthday party, and his aunt was there, and I shared this good news with her, expecting her to be excited for me but the only question that she had for me was, "where do you attend church?" When my answer was not "the church of Christ," she bowed her head in sadness as if to imply that I was still lost because I didn't say the "church of Christ." At that time, I was attending a Baptist church. Her husband approached me, and I shared the good news with him as well and he had the same question, "where do you attend church," and when I told him, and the answer was not the "church of Christ" his eyes glazed over followed by a cheesy legalistic grin on his face and he simply walked away from me and neither of them would speak with me for the rest of the night. I knew that something was terribly wrong! I could hear them both over in the corner going on and on about "salvation by water baptism" and that ONLY their church (the church of Christ) is the "true church." I quickly came to realize they were both deceived.