Apostolic Succession

Like the Catholic Church, the Orthodox believe in Apostolic Succession.

I think you are referring to "apostolic succession" or "holy tradition."

Christian churches cannot be called apostolic as there is only one Church, the Catholic Church, that is truly apostolic. There are some churches that put the term apostolic in their name; however, this is a misnomer as they cannot exhibit a line of succession from the apostles to the present. If by the Christian Church you mean the Catholic Church then the answer is obvious, every Bishop, priest, and deacon has been ordained in the apostolic succession. The four marks of Christ's Church are that it is "One, Holy, Catholic, and Apostolic":' the Catholic meaning that it is universal, and the Apostolic meaning that all its leaders are ordain by men who were ordained by the Apostles. "Christian" Churches, as in protestant churches are only apostolic in their dreams.

Apostolic succession