"But as we under Heaven are supreme head,
So under Him that great supremacy."
Collier's folio reads Heaven for 'Him,' which is very good.
"In likeness of a new, untrimmed bride."
This would seem intended to express the indecent haste of the wedding, the bride having, as it were, no trousseau, but being married in her ordinary clothes. In ii. 2 it was termed an "unlook'd-for, unprepared pomp." Theobald proposed 'and trimm'd' and 'betrimm'd'; Dyce reads 'uptrimm'd.'
"A cased lion by the mortal paw."
As 'cased' is skinned, it can hardly be right. I read, as Mitford, I find, had done, caged.