Too many would fall under this malediction to-day, sloppy priests and abusers of the sacred...
Jeremias xlviii, 10a: Cursed be he that doth the work of the Lord carelessly (Vulg. fraudulently, Sept & Neo-Vulg. negligently)!
In the originals:
אָרוּר, עֹשֶׂה מְלֶאכֶת יְהוָה--רְמִיָּה
(MT: Jer. xlviii, 10a)
ἐπικατάρατος ὁ ποιῶν τὰ ἔργα κυρίου ἀμελῶς
(LXX: Jer. xxxi, 10a - the Septuagint differently orders certain chapters)
Maledictus qui facit opus Domini fraudulenter*
(Vulg: Jer. xlviii, 10a - the Neo-Vulgate reads *neglegenter)
Compare and consider this following instructive tale told of some religious: two of the brethren were reciting the Office together in an unbecoming posture, when on a sudden the devil appeared in their midst, said "This is the incense suited to your prayers," and disappeared again, leaving behind a foul stench!