Gregory the Great — on Ezek 40:6 (Homilies on Ezekiel, Book 2, Homily 3)

“And measured the threshold of the gate, which was one reed broad. And he measured the threshold of the gate with one reed in width, that is, one threshold with one reed in width. Why, after "the threshold of the gate" was said, is "one threshold" immediately added, unless because it openly indicates that another threshold is mentioned still further below? Moreover, the gate rises from the threshold so that it may be a gate. If therefore the Lord is the gate, who is the threshold of this gate except those ancient fathers, from whose lineage the Lord deigned to become incarnate? As is said through Paul: "Whose are the fathers, from whom is Christ according to the flesh, who is over all things God blessed forever." But it should be noted in this statement of Paul that gods and other men have been called such, as is said to Moses: "I will make you a god to Pharaoh." And through the Psalmist it is said: "I said, you are gods." And again: "God stood in the assembly of gods." But it is one thing to be called God nominally, another to be called God by nature. And although Moses was made a god to Pharaoh, he is called a god within all things, not God over all things. But he who was incarnate within the Virgin's womb is called God over all things. And so the threshold of the gate are the ancient fathers, from whom he was born who opened for us the entrance to the heavenly kingdom. Moreover, the threshold of the gate is measured by one reed, because those ancient fathers themselves, who were able to proclaim our Redeemer both by prophesying and by living well, had as it were six cubits in the perfection of work and a palm in the beginning of contemplation. For since both perfect work and begun contemplation rendered their life sublime in the unity of faith, the measure of the threshold was in one reed.”