A practice that each church have to do this time, whatever what they preach, whatever what they tell, as long as they teach to serve our Lord Jesus, even for Calvinists (even if I don't agree with them on this point), as written in Mat 28 : 19. An archaic practice that we have to modernize with event creator and designer in order to attract more people. It urge, view the debacle that reigns nowadays.
Must we swallow everything that is taught to us? What's the limit? Every churches don't apply fully the Bible. If not, for example, the Earth has been filled of living churches. But there is always something good in each church. How can we select them among everything each church offers us? How can we choose them? What's the criterion of selection? Only the Scriptures. And only the Scriptures. (Sola scriptura, and every Protestant accept this). If something they teach isn't against the Bible and can be proven by some verses of the Bible, without handling, we can hear it (it's up to you, if you'll accept or not after that). In contrary, we can enjoy ourselves to laugh for what they teach us. Here's an example of how we can teach those teachers, on our turn, how to serve Jesus. If we are wasting time to criticize the others about a dust, we can't progress.