John Trapp on Isaiah 57:5

Ver. 5. Enflaming your ſelves with idols] That it might appear that there was good cauſe of ſo much ſharpneſs, and that he did them no wrong, he painteth them out in their colours, to the life: Incaleſcitis, id eſt concumbitis, whileſt ye commit folly and filthineſs with your idols, ye are all adulterers, as an oven heated by the baker: your baker ſleepeth all the night, in the morning it burneth as a flaming fire, Hoſ. 7.4, 6. And as the love of Harlots is oft hotter than that of husband and wife, ſo ſuperſtition many times out-doeth true religion.

Slaying the children] A barbarous practice, taught them by that old man-ſlayer. Careleſs parents do little leſs: whom therefore Bernard calleth peremptores potius quam parentes, rather Parricides than Parents.