This evening Deacon Daniel Galadza gave the first in a series of lectures on Eastern Catholic theology, and spoke about the ways in which the Byzantine liturgy includes commentary on itself, with sung elements that instruct the faithful about the meaning of the rite while it is happening.
A fine example of this is the “Cherubic Hymn”, sung as the priest begins the offertory procession called the “Great Entrance”.
We who mystically represent the Cherubim