We should certainly be careful to judge semanaries as untouched by the world (perfect) or tainted by sin. The reason is we haven't been there & seen them with our own eyes. It's just not worth it.
In the Bible in Jesus' day the best taught Sanhedrin were teaching the traditions of the elders as law, perverting the people.
Matthew 15:1Then came to Jesus scribes and Pharisees, which were of Jerusalem, saying,
2Why do thy disciples
transgress the tradition of the elders? for they wash not their hands when they eat bread.
3But he answered and said unto them,
Why do ye also transgress the commandment of God by your tradition?
4For God commanded, saying, Honour thy father and mother: and, He that curseth father or mother, let him die the death.
5But ye say, Whosoever shall say to
his father or
his mother,
It is a gift, by whatsoever thou mightest be profited by me;
6And honour not his father or his mother,
he shall be free.
Thus have ye made the commandment of God of none effect by your tradition. 7Ye hypocrites, well did Esaias prophesy of you, saying,
8This people draweth nigh unto me with their mouth, and honoureth me with
their lips; but their heart is far from me.
9But in vain they do worship me, teaching for doctrines the commandments of men.
We can't say such won't happen again because it has with the catholic church. Now it happens in protestant denominations.
The Bible says that the Holy Spirit would teach us all things, yet many say the baptism of the Holy Spirit is no longer for the church, & others that claim to have that baptism show their ignorance of the Scriptures, causing others to believe the baptism to be no longer available.
The truth is the Bible never said the Baptism had ended, so it hasn't. Why then do we see many faults in the "Spirit filled churches"? Simple. We are in the falling away of the church, where traditions, false doctrines, and additions to the gospel have made the gospel of none effect again. ALL churches are going through this.