Book of Concord
"Quia" subscription (the "Book of Concord" is adhered to "because" it is faithful to the Scriptures) implies that the subscriber believes that there is no contradiction between the "Book of Concord" and the Scriptures. "Quatenus" subscription (the "Book of Concord" is adhered to "insofar as" it is faithful to the Scriptures) implies that the subscriber leaves room for the possibility that there might be a contradiction of the Scriptures in the "Book of Concord" in which case the subscriber would hold to the Scriptures against the "Book of Concord". Some Confessional Lutherans maintain that this distinguishes them from other ("mainline") Lutheran bodies and Lutherans, who, they believe, hold to a "quatenus" subscription.