Isaiah 65:4

“Which remain among the graves, &c.] In order to practise necromancy, to consult the dead, where they imagined demons and departed spirits haunted, and of whom they fancied they might get knowledge of future things: and lodge in the monuments: whole nights for the same purposes. The Vulgate Latin version is, “that sleep in the temples of idols”; after the manner of the Heathens, who used to sleep there in order to obtain dreams, whereby they might be able to foretell things to come, as they did in the temple of Aesculapius; or, “in desolate places”f1268, as Kimchi and Ben Melech interpret it; where they expected to meet with demons and noxious spirits, to give them knowledge of things to…”

“remain among . . . graves--namely, for purposes of necromancy, as if to hold converse with the dead (Isa 8:19-20; compare Mar 5:3); or, for the sake of purifications, usually performed at night among sepulchres, to appease the manes [MAURER]. monuments--Hebrew, "pass the night in hidden recesses," either the idol's inmost shrines ("consecrated precincts") [HORSLEY], where they used to sleep, in order to have divine communications in dreams [JEROME]; or better, on account of the parallel "graves," sepulchral caves [MAURER]. eat swine's flesh--To eat it at all was contrary to God's law (Lev 11:7), but it much increased their guilt that they ate it in idolatrous sacrifices (compare Isa 66:17).…”

“Which remain among the graves - That is, evidently for purposes of necromancy and divination. They do it to appear to hold converse with the dead, and to receive communications from them. The idea in necromancy was, that departed spirits must be acquainted with future events, or at least with the secret things of the invisible world where they dwelt, and that certain persons, by various arts, could become intimate with them, or ‘familiar’ with them, and, by obtaining their secrets, be able to communicate important truths to the living. It seems to have been supposed that this acquaintance might be increased by lodging in the tombs and among the monuments, that they might thus be near to the…”

“Remain - They remained among the graves, there consulting with devils, who were thought to delight in such places; or to practice necromancy, all which were forbidden, Deu 18:11; Isa 8:19. Monuments - Some interpret it of idol temples, some of caves and dens, in which the Heathens used to worship their idols. Broth of abominable things - Of such flesh as was to the Jews unclean by the law. Isaiah 65:5”

“65:4 worshiping the dead: God had banned the practice of necromancy (consulting dead spirits; see 8:19-22; 47:9; Deut 18:9-11). • the flesh of pigs . . . other forbidden foods: See Isa 66:3-4; Lev 11:7; Deut 14:3, 8.”

“remain: Num 19:11, Num 19:16-20; Deu 18:11; Mat 8:28; Mar 5:2-5; Luk 8:27 which eat: Isa 66:3, Isa 66:17; Lev 11:7; Deu 14:8 broth: or, pieces, Exo 23:19, Exo 34:26; Deu 14:3, Deu 14:21; Eze 4:14 Isaiah 65:5”