B. Second Opinion

312. Another way [Aquinas] is to say that an angel knows God through his own proper essence, that is, through the angel’s essence, for the essence of an angel is an image and likeness of God; but each thing is known through its likeness and image; therefore an angel can know God through his nature and essence insofar as this is an image of God. And this image is called a ‘mirror’ image; therefore etc.a

a.a [Interpolation] Which is proved by Henry in the Quodlibet 5 q.9 [3 q.1, 4 q.7] and by Thomas in ST Ia q.56 a.3.