Ezekiel 40:6

(Verse 5 and following) And behold, there was a wall surrounding the house on all sides, and in the hand of the man was a measuring reed of six cubits and a handbreadth, and he measured the width of the building with the reed, one reed wide, and the height with the reed, one reed high. And he came to the gate that faced the eastern road, and he went up its steps, and he measured the threshold of the gate with the reed, one reed wide, that is, one reed wide, and the vestibule one reed long, and one reed wide, and between the vestibules five cubits, and the threshold of the gate next to the entrance of the gate inside, one reed wide. And the vestibule of the gate was eight cubits, and the front of it two cubits: but the gate itself was inward. And the chambers of the gate towards the east, three on this side, and three on that side; they measured one against another: and the fronts of the gate on both sides were of one measure. And he measured the length of the porch of the gate, ten cubits: and the breadth of the gate, thirteen cubits. And there was also a space before the chambers, one cubit on this side, and one cubit on that side: and the chambers six cubits on this side, and six cubits on that side. And he measured the gate from the roof of the chamber to its roof, a width of twenty-five cubits, door against door. Seventy: And behold, a wall on the outside of the house all around, and in the man's hand a measuring reed of six cubits and a handbreadth. So he measured the thickness of the wall, one reed; and the height, one reed. Then he went inside the gateway which faced toward the east, went up its stairs and measured the threshold of the gateway, which was one reed wide, and the other threshold was one reed wide. Each gate chamber was one reed long and one reed wide; between the gate chambers were five cubits. […]

The Apostle Paul, desiring the Ephesians to understand more sacred things, prays that they may be filled with the wisdom and love of the Lord, so that rooted and founded, they may be able to know and comprehend the breadth, and length, and depth, and height, and the profound riches of Him.

Then came he unto the gate which looketh toward the east. The man is described as having a measuring reed in his hand. He came to the gate that looked toward the way of the East. Who else is signified by the name of this gate, except our Lord and Redeemer himself, who was made for us the door of the heavenly kingdom? As he himself says: No one comes to the Father, except through me. But since we have said that the same man clothed in linen held the figure of the Lord, we must ask by what reasoning it is fitting that the same Lord can be designated both by the man and by the gate, when the man comes to the gate? Does he come to himself? Or is it so, because in the Gospel he himself testifies, saying: He who does not enter by the door into the sheepfold of the sheep, but climbs up another way, that one is a thief and a robber. But he who enters by the door is the shepherd of the sheep. And a little later he says: I am the door. And again he adds: I am the good shepherd. If therefore the shepherd enters by the door, and he himself is the door, he the shepherd, he without doubt enters through himself. Behold, while we desire to unravel the meaning of Ezekiel, we also bind a question from the Gospel. We must therefore ask how he both enters and enters through himself. For our Lord and Redeemer, with the holy Church which he redeemed, is one substance according to the flesh, as Paul attests who says: I fill up what is lacking of the sufferings of Christ in my flesh for his body, which is the Church. Of this head the body is the Church, and of this body the head is Christ. Concerning its head the body, that is the holy Church, exults, when it says through the Psalmist: But now he has exalted my head above my enemies. For because she herself is also to be exalted at some time, she now rejoices that her head is exalted above her enemies in heaven. […]

And went up the stairs thereof. For what are the steps of this gate but the merits of virtues? For whether in the knowledge of the Mediator of God and men, the man Jesus Christ, or in the knowledge of divine eloquence, or in that very faith which we have received from Him, we arrive at higher advancements by certain steps. For no one suddenly becomes supreme, but in good conduct everyone begins from the least things in order to arrive at great things. Concerning these steps it is said through the Psalmist: "God shall be known in her steps when He shall receive her." For when the Lord receives holy Church, He is known in her steps, because His glory is declared through her advancements. For as much as holy Church has advanced by ascending, so much does God become known to men from her virtues. Concerning these steps blessed Job also speaks, saying: "Through each of my steps I will proclaim Him." For he proclaims the Almighty Lord through each of his steps, who through the advancements of virtues which he receives always renders to Him the praise of His loving-kindness. If there were not certain steps in the ascent of the heart, the Psalmist would not say: "They shall walk from virtue to virtue." Nor is it surprising if there are steps from virtue to virtue, since each virtue is increased as if by certain steps, and thus is brought to the highest point through growth in merits. For the beginnings of virtue are one thing, progress another, perfection another. For if faith itself were not led to its perfection by certain steps, the holy apostles would never have said: "Increase our faith." And a certain man came to Jesus who wished his son to be healed, but when asked whether he believed, he answered: "I believe, Lord, help my unbelief." Consider, I ask, what is said. If he believed, why did he speak of unbelief? […]

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.