He even call his church as "Iglesia ni Cristo" (Note: Not a descriptive title because it starts in capital letters) instead of "One Holy Catholic Apostolic Roman Church" as what their doctrine states to be the true church of Christ.
At first, he believe that the church that Christ built is the Catholic Church:
And after realizing the truth, the fact that the name of the church which our Lord Jesus Christ built was "Church of Christ" and not "Catholic Church" he was now truly enlightened with the teachings of the INC about the name of Christ's church!
Proofs:
He even made a blog entitled "Iglesia ni Cristo 33 A.D"
For Truth's sake, he is going against the Catholic Church's doctrine, wow! Forgetting about his pledge: