Luke 10:16 "He who hears you hears Me, he who rejects you rejects Me, and he who rejects Me rejects Him who sent Me."
There's only one body of believers.
1st John 2:3 (the old 123)
"Now by this we know that we know Him, if we keep His commandments."
"And to the angel of the church in Philadelphia write,`These things says He who is holy, He who is true, "He who has the key of David, He who opens and no one shuts, and shuts and no one opens":
8 I know your works. See, I have set before you an open door, and no one can shut it; for you have a little strength, have kept My word, and have not denied My name.
9 Indeed I will make those of the synagogue of Satan, who say they are Jews and are not, but lie--indeed I will make them come and worship before your feet, and to know that I have loved you.
10 Because you have kept My command to persevere, I also will keep you from the hour of trial which shall come upon the whole world, to test those who dwell on the earth.
11 Behold, I am coming quickly! Hold fast what you have, that no one may take your crown."
The only "church" which is protected in the hour of trouble is commended for keeping His Command, His Word.
Here is the patience and faith of the saints, that they keep His commandments and have Testimony of Jesus.
I'm sorry, but the church has been disastrously lied to be about the teachings of Paul regarding the law.