(theology) the origination of the Holy Spirit at Pentecost; "the emanation of the Holy Spirit"; "the rising of the Holy Ghost"; "the doctrine of the procession of the Holy Spirit from the Father and the Son"
That which is moving onward in an orderly, stately, or solemn manner; a train of persons advancing in order; a ceremonious train; a retinue; as, a procession of mourners; the Lord Mayor's procession
Until quite recently, there were no accurate timepieces, so worship services did not have a precise starting time After the people gathered, the clergy and other ministers would enter the church in a procession to begin the service This custom is still continued in most churches today, though in some churches it only survives in the wedding service The first person in the procession is usually the crucifer, followed by other acolytes who light the candles and carry service books, then the choir, followed by lay ministers and then the clergy, with the highest ranking clergy last
The vehicular movement of the funeral from the place where the funeral service was conducted to the cemetery May also apply to a church funeral where the mourners follow the casket as it is brought into and taken out of the church