Subordinationism
Subordinationism is a heresy concerning the Trinity. It is an error that states that though the Son is divine, he is not equal to the Father in being, attributes, and rank. This error was rejected at the Council of Nicea. Essentially subordinationism states that the Son is inferior to the Father.
There are different kinds of subordination in different kinds of heresies relating to subordinationism throughout history. One form includes the error that the Holy Spirit is of a lesser quality and essence than the Father. The Arian form said that Jesus was created and because of his inferior nature, he was subordinate to the Father out of necessity of the distinction between creator and creature.
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