Cherubim escort; Isaiah Seraphim; God unseen; feet = untraceable ways

Cyril: …Father, except through me.’ Yet even if the only-begotten Word of God has become according to us, lowering himself into humanity and emptying, still it is also naturally his own to be understood in the God-fitting glory, and to exist in superiorities beyond the creation, just as indeed also before the flesh. For this reason the cherubim stand around the mercy-seat, covering with the wings, and turned toward it, and always fixing the face, and a clear proof of escort is the standing unto right and left. And the somehow intense and unsated unto God-sight of the uppermost powers seems to hint the cherubim always looking upon the mercy-seat. And in his own form the prophet Isaiah also writes the Son, saying: ‘I saw the Lord Sabaoth sitting upon a high and lifted throne, and Seraphim were standing in a circle around him,’ (Philippians 2:7) and six wings he says had grown for each, and they cover—with two the feet, and with two the faces, and fly with the others. And if someone should think that the Seraphim were covering the face of God, and indeed also the feet, it is not unlikely to think something such. For turning the meaning of Seraphim into a voice of Greeks, we will find a fullness of knowledge or a pouring of wisdom being signified. Therefore the all-wise and uppermost powers hint also very clearly by the form that it is not lawful for God’s face to be seen by anyone. For the nature beyond every mind is altogether out-of-sight, and dwells in unapproachable light, according to the voice of the blessed Paul, and ‘No one will see God’ (Exodus 33:20)s face and live,’ according at least to what was said uprightly by him toward Moses the most holy. But neither would anyone know both his tracks and his ways. For it has been written, ‘O depth of wealth and wisdom and knowledge of God; how unsearchable his judgments, and untraceable his ways!’ (Isaiah 6:1–2) And the blessed David also sings, and strikes up a wise song: ‘In the sea is your way, and your paths in many waters, and your tracks will not be known.’ (1 Timothy 6:16) For just as no one would see a track in waters—perhaps of a human or of a ship, or of those swimming in them—so no one would look down upon divine and ineffable ways. Of which the feet would be unto a type. And if indeed someone should suspect that the holy Seraphim pack down with the wings their own faces and feet, let us think that it is not lawful to see a beginning or end of the wisdom about God, or knowledge. For it itself is also incomprehensible, and beyond human mind. And beginning of every body is head; and end the feet. So then the mercy-seat is Christ, who even having appeared in flesh is no less God and Lord, by nature and truly, having even the uppermost powers themselves standing around in a circle in a slave-fitting way. And a holy word also said somewhere to us that after Satan stood away, having let go the trial in Christ, when he had fasted for us, angels came forward and were serving him; ‘For they are ministering spirits (Romans 11:33) (Psalm 77:19) (Matthew 4:11) (Hebrews 1:14)