We, however, are not in communion with all jurisdictions. Our apostolic succession comes from several lines dating back to Jesus Christ. Our lines include Ukrainian, Greek, Russian and others. For instance, St. Tikhon, the last true Patriarch of Russia who was murdered by the communists, is in our lines. We are not in communion with some Orthodox Churches because of their refusal to follow the sacred canons of the seven ecumenical councils and also for their misunderstanding of how the canons should be applied and what they mean.
Some canons are dogmas of the faith and some are administrative.
An example, the Nicene Creed is a dogma of the faith. We believe in the Nicene Creed and follow it to the letter. Another example, we should not pray with heretics. This is also a dogma of the faith. We do not pray with heretics.