The Christology of the second section is more detailed than that of the Nicene Creed and reflects the teaching of the First Council of Ephesus in 431, and the creed of the Council of Chalcedon in 451. The Athanasian Creed uses the term substantia (a Latin translation of the Nicene ousia: 'being' or 'substance') with respect to the relation of the Son to the Father according to his divine nature, but it also says that the Son is substantia of his mother Mary according to his human nature.
the christology of the second section is more detailed than that of the nicene creed and reflects the teaching of the first council of ephesus in 431 and the creed of the council of chalcedon in 451 the athanasian creed uses the term substantia (a latin translation of the nicene ousia 'being' or 'substance') with respect to the relation of the son to the father according to his divine nature but it also says that the son is substantia of his mother mary according to his human nature