“We think of worship as a specifically clerical sphere of activity. The priest celebrates, the laity attend. One is active, the other passive. It is another error and a serious one at that. The Christian term for worship is leitourgia which means precisely a corporate, common, all embracing action in which all those who are present are active participants. All prayers in the Orthodox Church are always written in terms of the plural we… The layman is in a very direct way the co-celebrant of the priest, the latter offering to God the prayers of the Church, representing all people, speaking on their behalf.”
(Fr Alexander Schmemann, ‘Clergy and Laity‘ )