In countering the Arian controversy in the fourth century, which claimed that the Son of God was a creature – even though a most exalted one - born in time, the fathers of the Church taught that Jesus, as the Son of God was consubstantial [of one essence] with the Father [oJmoouvsion tw'/ Patriv]. In teaching that the Son of God was consubstantial with the Father, the Church not only refuted the famous Arian slogan which stated that “there was a time when He [i.e., the Son of God] was not”, but also made plain that that the 'being' [oujsiva] of the Son in relation to his Father was identical, one and the same; and hence entirely 'other' from that of the world's nature. On the contrary, the Son’s 'being', the fathers taught, belonged to the same substance or essence of God, whereas that of the world's belonged to the will of God and was created. As the eternal Son of God, Jesus Christ was divine with exactly the same divinity as God the Father, but, as One born on earth from the virgin Mary in Bethlehem, he was also fully human. Being of the same substance with the Father, God's only begotten Son, the man Jesus of Nazareth not only revealed the Father – "I am the way, and the truth, and the life. No one comes to the Father except through me" (Jn 14:6) – but was also the saviour of the world. Being fully human, Jesus Christ identified totally with the human condition – except for sin of course – and therefore raised it back to God, uniting it with God. And so, the Church teaches that in the theanthropic person of Jesus Christ, the faithful of the Church not only 'behold' and 'see' God but are also saved by him as well.<ref>Extract from [http://www.greekorthodox.org.au/general/orthodoxchristianity/holytrinity "The Mystery of the Holy Trinity"] written by Mr. Mr. Philip Kariatlis, Academic Secretary and Associate Lecturer, St Andrew's Greek Orthodox Theological College.</ref>

===The Messiah===