Tertullian

“ When the Lord’s Body has been received and reserved [3] each point is secured, both the participation of the sacrifice and the discharge of duty. If the “Station” has received its name from the example of military life—for we withal are God’s military [4] —of course no gladness or sadness chanting to the camp abolishes the “stations” of the soldiers: for gladness will carry out discipline more willingly, sadness more carefully. ”