In order to clarify the inner accusative that you name, we could think about Hegel's speculative sentence. Hegel gives the example: "God is being," At first, it appears to be a normal declarative sentence in which God is the subject and "being" is the predicate. If this sentence is comprehended as a speculative sentence, however, then the distinction of subject and predicate is cancelled in that the subject turns into the predicate. God disappears in being; being is what God is. In the speculative sentence, "God is being," the "is" has a transitive character: ipsum esse est deui [being itself is God]. This relationship of the speculative sentence is nevertheless only a remote, risky analogy to the problem that now occupies us.
Heidegger's Lectures on Heraclitus
