Isaiah 57:5

Slaying the children, &c.— It is generally agreed, that the prophet in these words alludes to some detestable superstitious rite made use of in his times in the worship of idols, which some refer particularly to the sacrifices offered to Moloch, for which the valley of Hinnom was remarkably infamous. But, whatever the reference be, the passage must be understood metaphorically of the superstition and cruelties practised in the period of the Christian church referred to.