Recently (1/25/2012) at an event named "The Elephant Room" a round table discussion was moderated by Mark Driscoll and James MacDonald in which Bishop T.D. Jakes was put on the spot regarding his proposed belief in modalism aka" oneness doctrine.
I have featured posts on modalism on this blog. Sabellianism, as it was initially known, was a third century teaching deemed a heresy by the early church. The concept, rooted in a method of interpretation of certain biblical passages, affirms that there is only one God, but claims that the one God's name is Jesus and that Jesus simply changes role from Father to the Son and from Son to Holy Ghost. Sabellianism holds that Jesus merely "manifests" himself as the Father, and as the Holy Ghost. In contrast, trinitarian believers hold that based on the biblical description, that there is only one God who eternally exists as three persons. God the Father, God the Son and God the Holy Ghost. Trinitarians affirm an eternal distinction of the personal identity of the Father, Son and Holy Ghost based on mind, will, intellect, self-awareness and not merely based on role or actions.