A gathering to which all of the bishops of the whole inhabited world (in Greek, "oikumene") are called to address the common needs and concerns of the entire Church militant here in earth. To date, there have been seven ecumenical councils: Nicea (325), Constantinople (381), Ephesus (431), Chalcedon (451), Constantinople (553), Constantinople (690), Nicea (787). There have, of course, been no ecumenical councils since the schism between the Eastern and Western churches in 1054;
certain councils of the Western church (including four held at the Lateran Palace in Rome) are sometimes, but inaccurately, called "ecumenical."

The principal service of the Christian Church, celebrated
in keeping with the Lord's own instruction to "do this in remembrance of me." (The word is from the Greek, meaning "to give thanks.")

The daily evening service of prayer, praise, and Scripture reading.