Several Christian denominations allow sermons or homilies on liturgical texts as well as Scripture:
Catholic Church
The Catholic Church permits homilies on liturgical texts, particularly:
Prayers from the Mass, including collects
Other liturgical prayers and hymns
Texts from the Divine Office
Catholic homilies often connect Scripture readings with liturgical texts and seasons.
Eastern Orthodox Church
Eastern Orthodox churches allow homilies on:
Liturgical prayers and hymns
Texts from the Divine Liturgy
Writings of Church Fathers used in worship
The Orthodox tradition views the liturgy itself as a bearer of divine revelation, making it a valid subject for preaching.
Anglican/Episcopal Church
Anglican and Episcopal churches permit sermons on:
The Book of Common Prayer texts
Collects and other liturgical prayers
Hymns and spiritual songs used in worship
The Anglican tradition recognizes the theological depth of its liturgical texts as worthy of exposition.
Lutheran Church
Lutheran churches allow sermons on:
Texts from their liturgical books
Confessional documents (e.g., Luther's Catechisms)
Hymns, especially those by Martin Luther
Lutherans view their confessional and liturgical texts as important expressions of their theology.
Other Liturgical Protestant Churches
Some other liturgical Protestant denominations, such as Methodists and Presbyterians, may also permit sermons on liturgical texts, though this practice is less common than in the above-mentioned traditions.
These denominations recognize the value of their liturgical heritage in conveying Christian truth and see liturgical texts as valid subjects for preaching alongside Scripture.
