Orthodoxy has two meanings. The first is "true teaching." The Orthodox Church believes that she has maintained and handed down the Christian faith, free from error and distortion, from the days of the Apostles.
The second definition, is "true praise." To bless, praise, and glorify God the Father, Son, and Holy Spirit is the fundamental purpose of the Church. All her activities, even her doctrinal formulations, are directed towards this goal !
The Orthodox Church is evangelical, but not Protestant. It is orthodox, but not Jewish. It is catholic, but not Roman. It isn't non-denominational - it is pre-denominational. It has believed, taught, preserved, defended and died for the Faith of the Apostles since the Day of Pentecost 2000 years ago.