The early, the contemporary and the false Church

The teachings received by the early Roman Catholic Church from the Apostles were sound and free of errors because the Apostles were taught directly by the Founder Himself, the Lord Jesus Christ and backed by the power of the First Pentecost. The current Church is approximately 2,000 years away from the early Church. How can we determine if the teachings of today's Church are sound and error-proof? Is the contemporary Church still aligned to the teachings of Christ? The gauge, therefore, is to see to it the current teachings are aligned to the teachings of the early Church which were trustworthy because of its proximity to the time on earth of the Founder and the Apostles and the advent of First Pentecost. If the current Church veered away from the ideals of its foundation, chances are, it is gradually separating itself from the Church that it was once before, slowly moving off-track and detouring into a new beginning of the New Religion -- a deviation from the Roman Catholic Church in which foundation was laid through the Blood and Death of the Lord Jesus Christ on the Cross and His Resurrection -- thus, paving the way to a False Church to start in the offing.