17 But though never before, now, at any rate, let us do this. Yea, for we are on the point of entering into a city (if God permit) of gold, and more precious than any gold.
Let us then mark her foundations, her gates consisting of sapphires and pearls; for indeed we have in Matthew an excellent guide. For through his gate we shall now enter in, and much diligence is required on our part. For should He see any one not attentive, He casts him out of the city.
Yes, for the city is most kingly and glorious; not as the cities with us, divided into a market-place, and the royal courts; for there all is the court of the King. Let us open therefore the gates of our mind, let us open our ears, and with great trembling, when on the point of setting foot on the threshold, let us worship the King that is therein. For indeed the first approach has power straightway to confound the beholder.
For the present we find the gates closed; but when we see them thrown open (for this is the solution of the difficulties), then we shall perceive the greatness of the splendor within. For there also, leading you with the eyes of the Spirit, is one who offers to show you all, even this Publican; where the King sits, and who of His host stand by Him; where are the angels, where the archangels; and what place is set apart for the new citizens in this city, and what kind of way it is that leads there, and what manner of portion they have received, who first were citizens therein, and those next after them, and such as followed these. And how many are the orders of these tribes, how many those of the senate, how many the distinctions of dignity.
Let us not therefore with noise or tumult enter in, but with a mystical silence.
For if in a theatre, when a great silence has been made, then the letters of the king are read, much more in this city must all be composed, and stand with soul and ear erect. For it is not the letters of any earthly master, but of the Lord of angels, which are on the point of being read.
If we would order ourselves on this wise, the grace itself of the Spirit will lead us in great perfection, and we shall arrive at the very royal throne, and attain to all the good things, by the grace and love towards man of our Lord Jesus Christ, to whom be glory and might, together with the Father and the Holy Ghost, now and always, even for ever and ever. Amen.
Source: Homilies on the Gospel of St. Matthew (New Advent)