The Second Ecumenical Council took place in Constantinople in 381 AD, and is also known as the First Council of Constantinople. The second of the seven Ecumenical Councils dealt with the following: * The heresies of Macedonianism and Apollinarianism, off-shoots of the Arrian heresy * Expanding and adapting the Nicene Creed, in particular, developing the teaching upon the Holy Spirit * Altering the provisions of the Canon VI of the First Council in Nicea