Bible Encyclopedias
Twelfth Day of the Month.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

In the evening service of the Church of England for the twelfth day of any month, the hymn after the second lesson, beginning "God be merciful unto us," etc., is omitted, because it comes in the regular psalm for the day, and would thus occasion an unnecessary and useless repetition. Stanton, Dict. of the Church, s.v.

Bibliography Information
McClintock, John. Strong, James. Entry for 'Twelfth Day of the Month.'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/​encyclopedias/​eng/​tce/​t/twelfth-day-of-the-month.html. Harper & Brothers. New York. 1870.