John Wesley on Isaiah 65:4

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, Deut 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.