I know that some people have told you already about the Iglesia Ni Cristo. But I am sure that what they have told you are just part of the hearsay that they also heard from those who are persecuting the Church.
If you'll read the Bible, especially in the book of First John, you'll learn that it's God's teaching to check the spirit of those who are teaching spiritual teachings whether the spirit is of God or not. But checking couldn't be done by simply listening to those people who have no authority.
For example, if you want to learn the teaching of the Catholic Church, it would be better if you listen to the teachers inside the Catholic Church. If you want to check the teachings of the Baptist Church, then attend their worship service and listen to their teaching. But if you want to examine the Iglesia ni Cristo, the best way to do it is by attending the seminar on doctrine of the Iglesia ni Cristo.
In this way, what has been planted in your head is really the teaching of the church you are examining not just the hearsay you heard from someone who are not even affiliated with the Church.
