Gregory the Great, on Ezek 40:2

“In the visions of God he brought me into the land of Israel, and set me upon a very high mountain: upon which there was as the building of a city, bending towards the south.”

“And he brought me in there. He enters the building of the heavenly city who considers by imitating the ways of the good in holy Church. For to enter the building upon the mountain is to consider with love how the elect of holy Church, established on the summit of virtues, advance in the Lord. For this one leads a life bound by marriage, is content with his own possessions, does not seize what belongs to others, bestows whatever he is able from his own goods upon the needy, and does not neglect to weep for the sins without which daily life cannot be led by married people. For because that very domestic care disturbs his mind, he stirs himself to tears. But that one has already abandoned all things that are of the world, desires to have nothing of it, is nourished by the exercise of contemplation alone, rejoices with weeping in hope of heavenly rewards, transcends even those things which are permitted to be possessed, seeks to have daily intimacy with the Lord; no care of the passing world disturbs his mind; he always expands his mind in expectation of heavenly joys. But another has already abandoned all things of this world, and his mind is lifted up to the contemplation of heavenly things; yet nevertheless, for the edification of many, holding a position of governance, he who does not succumb to passing things out of desire is sometimes turned back to them out of compassion for his neighbors, so that from care for them he may show mercy to the needy; he preaches the word of life to his hearers, ministers things necessary for souls and bodies alike. And he who on his own account already soars by contemplation to heavenly desire, still toils in temporal affairs for the advancement and benefit of his neighbors. Therefore whoever in holy Church diligently strives to consider, so that he may advance either in the life of the good who are married, or in the citadel of the continent who abandon all things that are of this world, or even in the height of preachers, has already entered the building of the city set on a mountain. For he who neglects to consider the life of better persons in order to advance still stands outside the structure. And if he admires the honor which holy Church now holds in the world, he gazes upon the building as if from outside and is amazed. And because he is intent only on external things, he has not entered within.”

Imported from an open dataset — not yet checked against the printed edition.