There is only one universal church, the Bride of Christ. Its only to the carnal minded that there are many churches.
It’s only the carnal mind that thinks that a denomination is what Jesus meant about His Bride. Manmade distinctions and labels are what causes division.
The true body of Christ exists throughout time and space, not confined by manmade labels. There are saved and unsaved that attend what man has labeled churches around the world.
It’s not Catholics who are saved. It’s not the Lutherans, Baptists, Assemblies of God, whatever, who are the saved. It’s the saved who are found attending worship services in all those various denominations.
Too many people need to have there thinking transformed as we are admonished in Romans 12:2.