Cursed is he that does the work of the LORD deceitfully, and cursed is he that keeps back his sword from blood.
All Commentaries on Jeremiah 48:10 Go To Jeremiah 48
Caesarius of Arles
I exhort and admonish you, dearly beloved, that whenever the priest prays at the altar or when the deacon intones the prayer in a loud voice, you devoutly bow your bodies as well as your hearts. I have carefully noted that when the deacon says the usual flectamus genua, most of the people frequently remain standing like straight columns. This is not at all proper or right for Christians who are praying in church, because the deacon does not pray for us from you. Since those words are addressed to you in particular and most of all to the negligent, it is just for you to devoutly obey them. Let that prayer become a remedy for those who obey it but evidence against those who do not, according to the words, “Cursed is one who does the work of God carelessly.” We also ought to fear and perfectly accomplish what the apostle said: “Be attentive in prayer, being vigilant,” and “pray without ceasing. In all things give thanks.”