The traditional posture for prayer and worship in the Orthodox Church is to stand. In “Orthodox countries” there are usually no pews in the churches. Chairs or benches on the side walls are reserved for those who need them, i.e. the elderly, infirm, “with child”, etc. In North America, some Orthodox faithful have introduced pews into their churches thus creating the artificial “need” to figure out when to sit and when to stand. Whether a church has few chairs or many, there are times when one should definitely stand:
As you can see, this leaves little time for sitting. Whatever parish you are in, when in doubt, stand in prayer—yet remaining sensitive to not drawing attention to oneself, or blocking other's participation in the service.
Lighting candles is an important part of Orthodox worship. We light them as we pray, making an offering to accompany our prayers. Orthodox typically light candles upon entering the church, after venerating the icons. If a service is already in progress, and the candlestands are up front, it is a good idea to wait until after the service to light candles so as to not distract others from prayer, nor draw undue attention to oneself.
Since this is entirely inappropriate, without due cause, for a Christian who has come to worship God, the point is moot. The same goes for leaving services early. Experience testifies that coming to Church late is more a matter of “habit” than circumstance: there are those who come late, and those who don't. Some rules of thumb: Those who arrive late should generally refrain from partaking of the Eucharist that day as “proper preparation” for Holy Communion assumes the ascetical effort of arriving on time service. One should refrain from venerating icons in the front of the church, etc. for the same reasons given under “Lighting Candles.”
In many cultures throughout the world, crossing one's legs is taboo and considered very disrespectful. In North America there are no real taboos against such action, rather, we tend to cross our legs to get comfortable. Should we do so in church? No. Not because it is “wrong” for us ever to cross our legs, but because it is deemed too casual—too relaxed—for being in the presence of God. When we get settled in our favorite chair at home, we lean back, kick up our legs, and allow our minds to wander. Remember, sitting in church is a concession, not the norm of prayer. We strive to remain attentive (i.e.: “Let us attend”) at all times as a soldier prepared for (spiritual) battle before his commander. Should we sit, we do so attentively, that our minds not wander from the “one thing necessary.”
Certainly parents should have ready access to the doors to take small children out if they are distracting or need a short break—for this reason the doors are to be accessible, i.e. let us avoid the temptation to congregate around the back candlestand and door, and challenge ourselves to move forward into the Nave. For times when it is inappropriate, unless necessary, to walk out of the service see “Standing vs. Sitting”.
Lipstick looks terrible smeared on icons, crosses, the communion spoon, and the priest’s or bishop’s hand. Hand-written icons have been ruined by lipstick; and even though the cross or spoon can usually be cleaned after everyone venerates, it’s not very considerate to those who follow. What is the answer? If one insists on wearing lipstick to church, blot your lips well before venerating... Point of consideration: God, Whom we alone come before in Liturgy, is not impressed with our external attractiveness, but with the adorning of our souls in humility, good works, and piety.
Besides being disrespectful toward God Who is present, it is distracting for others who are striving to pray. This rule includes all services of the Church, whether it be the Hours read prior to Divine Liturgy, or the priest hearing Confessions after Vespers. It is best to save conversation for the fellowship hall, inviting guests to the hall for a visit.
The traditional way to greet a bishop or priest is to ask his blessing and kiss his right hand. How do you do this? Approach the bishop or priest with your right hand over your left and say “Father (“Master,” in the case of a bishop), bless.” When the faithful receive such a blessing it is understood that Christ Himself offers the blessing through the hand of the priest or bishop. That being said, it is not "offensive" to reach out to shake their hand, thus not "expected" nor assumed from those who are not of the tradition of the Church.
There was a time when people put on their “Sunday best” to go to church. By contrast, there is today not an insignificant backlash against such propriety. Many contemporary churches innocently flaunt a “come as you are” pitch as part of their advertising ploy. Though God does not demand us to “dress up” for Him (as though He is in any way impressed by our external appearance), the fact is, as followers of Christ in all areas of our life, we should offer Christ our “best” and not just our “leftovers” (c.f. Cain and Abel). Our dress should always, especially at church, be becoming of a Christian. We dress modestly, not in a flashy way that merely brings attention to ourselves.
The above guidelines may be adjusted for services outside of Divine Liturgy, i.e. Vespers. It is better to be in church for prayer, than to not come at all for mere lack of a change of clothes—as may be the case when coming from a Saturday outing, or work-party, etc. Finally, this is not a call for someone to buy a whole new wardrobe just to be a part of the Church! Use your best judgment and good taste when it comes to Church. You don't go to church to be seen by people—you go to present yourself before, and to worship, God.
A person looking around on a Sunday morning may notice that different people cross themselves at different times. To a certain extent, when to cross oneself is a matter of personal piety and not of dogma. However, there are times in the service when crossing oneself (thumb and first two fingers touching each other, third and fourth fingers folded into the palm: touching head first, to stomach, right shoulder to left) is called for:
Parents often bring little snacks for young children to keep them occupied and quiet in church. This is fine as long as it is discreet and quiet and the parent sees to cleaning up any leftovers. By the time a child is 3-4 years old this will most likely be unnecessary. And by the time a child reaches age 7 they are mostly capable of fasting the entire morning of Holy Communion (or at least cutting back on breakfast). For those children who do require snacks during service, please refrain from feeding them, even a bottle, while in line for Communion, as they ought to come to the Holy Mysteries without food already in their mouths. Chewing gum is never appropriate in church.
After taking Communion, at the end of the Divine Liturgy, and at Vespers with a “Litya” or “Blessing of Bread", it is traditional to eat a piece of holy bread or antidoron—the left-over bread from which Holy Communion was prepared and various commemorations made. While antidoron is not the Body and Blood of Christ, it is blessed bread, and as such, we should take precaution to eat it carefully so that crumbs don’t fall to be trampled underfoot. Monitor the children as they take the antidoron, teaching them to eat respectfully.
Our American culture of the 21st Century is rather casual, even subtly anarchist, in its approach to life. Dress, music, language, values, morals, and entertainment all reflect a trend to “downgrade” life from what God intended it to be. We mustn’t allow this prevailing tendency to enter into our Christian piety, whether at home or at church. Most church etiquette is based on simple common sense and a respect for God and others. We are in church to worship God in Holy Trinity. The priest announces, “In the fear of God, with faith and love, draw near.” If we approach our lives and our worship together with this in mind, then we will be people of proper church etiquette.