There is only one Church, the worldwide Church of believers. It is often just called the Church of Christ. All this splitting into denominations (i.e. Methodists, Baptists, Lutherans, Adventists, etc. ad nauseum…), each with different beliefs, doctrines, and teachings is not Scriptural.
Christ even prayed specifically for unity among Christians; Christians (in general) completely disregard this prayer and wish of Christ. Please note however that calling out false teachings as I am doing is NOT sowing disunity – it is calling for a return to the pure and true gospel truth as it was handed down once for all time in Scripture.