The doctrine of the Trinity was not always accepted by some in the church. Here are three controversies surrounding the Trinity: Arianism, modalism, and the filioque.

This article discusses the heresy of modalism—where it originated, who still believes it, and whether T.D. Jakes is a modalist.

Modalism holds that Father, Son, and Holy Spirit are not distinct persons in the Godhead but are different modes of existence of a single person. This teaching is false, and the article looks at one of the false teachers advancing this teaching: T.D. Jakes.