Puritan Board Freshman
So even though you claim that WCF 19:4 refers to the judicial law, you also claim that general equity refers only to the moral law. If that is the case, then as the Westminster Divines cite the OT penalties as expositions of the moral law, then they must have regarded the penalties as part of the moral law and thus perpetually binding upon all.
That doesn't follow. The OT penalties can be an example of the moral law without being perpetually binding upon all.