Let’s define Christian. A Christian is a person who believes in Christ. Orthodox Christian is the most widespread faith in the East, including our Romanians. When I say east, I mean eastern Europe.
In the old days, Christians gathered in catacombs, churches hidden underground, and practiced Christianity. They would gather there and say prayers. Now, Christians no longer being so persecuted, they pray in churches placed on the surface of the earth, in places of worship, larger or smaller.
Probably the future will also consist in the establishment of places of worship located in the air or at higher levels. If they are not already, and no one knows them, or few.
Man, in my opinion, can offer prayers everywhere. And in any conditions, and for people anywhere, whether they are in the mine, through the forest, on the water, or wherever a person can be, whether he or she is a diver.