¹ tn Hebrew שָׂרָף (saraf, “seraph”) literally means “burning one,” perhaps suggesting that these creatures had a fiery appearance (cf. TEV, CEV “flaming creatures”; NCV “heavenly creatures of fire”). Elsewhere in the OT the word “seraph” refers to poisonous snakes (Num 21:6; Deut 8:15; Isa 14:29; 30:6). Perhaps they were called “burning ones” because of their appearance or the effect of their venomous bites, which would cause a victim to burn up with fever. It is possible that the seraphs seen by Isaiah were at least partially serpentine in appearance. Though it might seem strange for a snake-like creature to have wings, two of the texts where “seraphs” are snakes describe them as “flying” (Isa 14:29; 30:6), perhaps referring to their darting movements. See the note at 14:29.

³ tn The word עָרֹב (ʿarov) means “a mix” or “swarm.” It seems that some irritating kind of flying insect is involved. Ps 78:45 says that the Egyptians were eaten or devoured by them. Various suggestions have been made over the years: (1) it could refer to beasts or reptiles; (2) the Greek took it as the dog-fly, a vicious blood-sucking gadfly, more common in the spring than in the fall; (3) the ordinary house fly, which is a symbol of Egypt in Isa 7:18 (Hebrew זְבוּב, z^evuv); and (4) the beetle, which gnaws and bites plants, animals, and materials. The fly probably fits the details of this passage best; the plague would have greatly intensified a problem with flies that already existed.

² sn Jer 23:30-33 are filled with biting sarcasm. The verses all begin with the words “Behold, I am against the prophets who…” and go on to describe their reprehensible behavior. They “steal” one another’s messages, which the Lord sarcastically calls “my words” (The passage shows that they are not; compare Marc Anthony’s use of “noble” to describe the ignoble men who killed Caesar). Here the idiom translated “to use their own tongue” really refers to taking something in preparation for action, i.e., “they take their tongue” and “declare.” The verb “declare” is only used here and is derived from the idiom “oracle of,” which is almost universally used in the idiom “oracle of the Lord,” which occurs 176 times in Jeremiah. That is, it is their tongue that is “declaring not his mouth” (v. 16). Moreover, in the report of what they “declare,” the Lord has left out the qualifying “of the Lord” to suggest the delusive nature of their message, i.e., they mislead people into believing that their message is from the Lord. Elsewhere in the discussion of the issue of false prophecy the Lord will use the full formula (Ezek 13:6-7). How ironic that their “Oracle of…” is punctuated by the triple “Oracle of the Lord” (vv. 30, 31, 32; translated here “I, the Lord, affirm that…”).