I can confirm as being raised Greek Orthodox (but not practising), the main thing about being a practising orthodox Christian is going through the liturgical calendar, which dictates which parts of the bible that are read, and so some aspects of the Bible are emphasized while others are not, and the idea of "living" the Bible through that calendar (living versus preaching). There's no real emphasis in converting other people, or the idea as long as you accept Jesus Christ the way you live your life doesn't matter. Hell for example is thought of as being alienated from God, not a literal burning in hell. In the same way Revelations is not really discussed nor emphasized.
It is an interesting question, how do you determine what is "true"? My outlook is that of being a humanist and existentialist. However even if you use the proof of what you have felt, seen, experienced, I have had times during my life, where I have had, what people would call, a sense of the greater. Sometimes it was in Church, sometimes listening to a song, or being in nature, or woken up from a dream. So that is something directly experienced, "sensed". Now I am a scientist, and most likely there will be a point where all my experiences can be explained scientifically. But I guess I also would like to leave the door open a crack, and say that maybe there are some things that will never be fully explained by science. Doesn't mean it's magical, just that there are natural limits to what science and math can describe and explain, and what humans can know. And I think there will always be a natural human curiosity and interest at poking at those corners, "mystery". My most important take away, is that I am amazed at the complexity and livingness and interconnectedness and age of the earth and the universe, and gratitude to be alive and to be aware of it in this time and place. Even if there are not bigfoots and flat earths or possibly a JudeoChristian God, there are still black holes, water bears, continental drift, deep sea vent life, galaxies, magnetism, gravity, and plenty of things to be in awe of.