If you will not listen, and if you will not lay it to heart to give glory to my name, says Yahweh of Armies, then I will send the curse against you and I will curse your blessings. Indeed, I have cursed them already, because you do not lay it to heart. Bible other translations

“the curse.” This could also be translated as, “I will send Curse against you,” as if Curse was a real being (it may be a real demon). The curse is in Deuteronomy 28:15-20 and following (see commentary on Deut. 28:20). Note that in Deuteronomy there is Curse, Confusion, and Rebuke,” and here in Malachi the priests and people are being disobedient and are under the curse (Mal. 2:2) and rebuke (Mal. 2:3).

Commentary for: Malachi 2:2