The boys talk angels together. First Calvin:
Meanwhile since angels are living creatures we must observe in what sense God attributes to angels themselves the head of a lion, an eagle, and a man: for this seems but little in accordance with their nature. But he could not better express the inseparable connection which exists in the motion of angels and all creatures. We have said, that angels are not called the powers of God in vain: now when a lion either roars or exercises its strength, it seems to move by its own strength, so also it may be said of other animals. But God here says, that the living creatures are in some sense parts of the angels though not of the same substance, for this is not to be understood of similarity of nature but. of effect. We are to understand, therefore, that while men move about and discharge their duties, they apply themselves in different directions to the objects of their pursuit, and so also do wild beasts; yet there are angelic motions underneath, so that neither men nor animals move themselves, but their whole vigor depends on a secret inspiration.
Commentary on Ezekiel 10:14
Then Tolkien:
I perceived or thought of the Light of God and in it suspended one small mote (or millions of motes to only one of which was my small mind directed), glittering white because of the individual ray from the Light which both held and lit it. (Not that there were individual rays issuing from the Light, but the mere existence of the mote and its position in relation to the Light was in itself a line, and the line was Light). And the ray was the Guardian Angel of the mote: not a thing interposed between God and the creature, but God’s very attention itself, personalized. And I do not mean ‘personified’, by a mere figure of speech according to the tendencies of human language, but a real (finite) person. Thinking of it since – for the whole thing was very immediate, and not recapturable in clumsy language, certainly not the great sense of joy that accompanied it and the realization that the shining poised mote was myself (or any other human person that I might think of with love) – it has occurred to me that (I speak diffidently and have no idea whether such a notion is legitimate: it is at any rate quite separate from the vision of the Light and the poised mote) this is a finite parallel to the Infinite. As the love of the Father and Son (who are infinite and equal) is a Person, so the love and attention of the Light to the Mote is a person (that is both with us and in Heaven): finite but divine: i.e. angelic.
Letter 99, To Christopher Tolkien
There is a common, catholic – if not identical – doctrine of angels here. Calvin elsewhere in his Ezekiel commentary discusses how angels are pictured as lightning, a form of Light.
A Pilgrim's Missives 