What kind of obligation is laid upon the modern theologian by knowing the Church`s position on this historically; specifically, are we obliged to correct such error when it is encountered today?

Arius` Christology has been called "subordinationist" in that it subordinates the Son to the Father with regard to his being. From Nicaea onward, the Church has rejected subordinationism as heresy, but various forms of it have popped up over the centuries. For instance, the 19th-century movement, Jehovah`s Witnesses, espouses a subordinationist understanding of Christ.

  1. Have you encountered the notion that Jesus is somehow less God than God the Father?
  2. What kind of obligation is laid upon the modern theologian by knowing the Church`s position on this historically; specifically, are we obliged to correct such error when it is encountered today?
  3. How do we go about doing that?