Shared ground
Isaiah 57:3–7 reads like a public summons followed by a first set of charges. The speaker calls the accused to come close and hear what is being said about them. The opening labels (“sons…seed…offspring”) function as moral branding: they are associated with sorcery, adultery, and prostitution—images of betrayal and corrupt worship rather than a calm family record.
The passage links contempt (mocking gestures and speech) with concrete practices at well-known shrine locations: trees, valleys, rocks, and high mountains. The speaker treats these actions as rival loyalty, expressed through offerings and sacrifice. The rhetorical question (“Shall I be appeased…?”) signals that these gifts cannot make the speaker accept what is happening.
Where interpretation differs (only where needed)
Some readers take parts of the language more literally (as if the group is descended from practitioners of sorcery, or as if “set your bed” describes actual sexual activity at shrines). Others read these as deliberately graphic metaphors for unfaithfulness, with “bed” and “inflame yourselves” highlighting religious betrayal in the strongest possible terms.
There is also uncertainty about details: whether the “smooth stones of the valley” are objects treated as sacred (stones used as cult objects) or whether the phrase is a poetic way of describing a chosen place/portion tied to valley worship.
Why the disagreement exists
The text uses insult and image-heavy speech that can overlap with real actions. Isaiah can describe worship as “adultery” and also describe actual rites at specific sites. Because the same phrases can fit both literal practice and metaphorical accusation, readers weigh the likely background practices differently.
What this passage clearly contributes
Explicitly, the passage ties idolatry to both attitude and action: mockery and deceit (v. 4) are matched by repeated, place-based rituals (vv. 5–7). It also frames idolatry as a rival “portion” and “lot” (v. 6): the accused are portrayed as having assigned themselves to other powers, receiving their identity and security from them rather than from Israel’s God. The sharp family-language and the question about being “appeased” underline that offerings do not cancel betrayal.