See too Skelton's own remarks in Discourse V.p.

265.
Ib.p.

251.
This was necessary, because their Law was ordained by angels.
Now this is an instance of what I cannot help regarding as a superstitious excess of reverence for single texts.

We know that long before the Epistle to the Hebrews was written, the Alexandrian Church, which by its intercourse with Greek philosophers, chiefly Platonists, had become ashamed of the humanities of the Hebrew Scriptures, in defiance of those Scriptures had pretended, that it was not the Supreme Being who gave the Law in person to Moses, but some of his angels.

The author of the Epistle to the Hebrews, arguing 'ad homines', avails himself of this, in order to prove that on their own grounds the Mosaic was of dignity inferior to the Christian dispensation.