Isaiah 65:4

Monuments] RV 'secret places.' The v. alludes to the custom of sleeping in sepulchres or vaults of idol temples to learn the future through dreams. Eat swine's flesh] i.e. in sacrificial meals (Isaiah 66:17); it was forbidden by the Law as unclean (Leviticus 11:7; Deuteronomy 14:8). Broth, etc.] referring to a sacrificial feast of unclean food.