The Forgotten Trinity:
Grow in this bedrock doctrine and glorify your Triune God
Where do you think the cults get the majority of their members?
Some people might think that the bulk of their membership come from the un-churched masses. However, that is not the case. The cults get their people from members of mainline orthodox Christian churches. The cults know that Trinitarian churches are fertile soil for their proselytizing because the pastors in these churches have not taught their members the Biblical doctrine of the Holy Trinity.
Consequently, the people in these orthodox churches have no discernment they do not know that the One God of the Bible is Triune in nature. And that means that the One God of Scripture eternally exist in Three Persons.