THEOLOGICAL CLUE

The Holy Trinity is a "liturgical late-comer" among the feasts and festivals of the church; officially, it has been an established feast of the church for 555 years, since Pope John XX approved of it in 1334. Its history began with the dedication of churches to the Holy Trinity in the ninth century, at least one liturgy in the tenth century, and an actual feast celebrated in the eleventh century. This festival was retained in the revised church year and the liturgy of the church by the skin of its teeth. Some liturgical theologians and "revisionists" wanted to have it deleted from the worship program of the church because it is the celebration of a doctrine, focusing on an abstraction: who has not heard - or delivered - a sermon in which the theme centered on the nature o…