Basil of Caesarea : Some give the definition that a city is an established community, administered according to law. And the definition that has been handed down of the city is in harmony with the celestial city, Jerusalem above. For there it is a community of the firstborn who have been enrolled in heaven, and this is established because of the unchanging manner of life of the saints, and it is administered according to the heavenly law. Therefore, it is not the privilege of human nature to learn the arrangement of that city and all this adornment. Those are the things "eye has not seen or ear heard, nor has it entered into the heart of humanity, what things God has prepared for those who love him." But there are myriads of angels there, and an assembly of saints and a church of the firstborn that are enrolled in heaven.… Therefore, having raised the eyes of your souls, seek, in a manner worthy of things above, what pertains to the city of God. What could anyone consider as deserving of the happiness in that city, which the river of God makes joyful and of which God is the craftsman and creator? — HOMILIES ON THE Psalms 18:4 (Psalms 45) Theodoret of Cyrus : Everyone will see a truer fulfillment of these promises in the future life. That life is free from all injustice. That life is adorned with the highest justice. That life is in truth without sorrow and exempt from troubles. However, one also finds, as it were, a prefigurement of a similar state of affairs even now in the church of God. It has been freed from the error of idols, it continually extols the God of the universe in hymns and its leaders watch (insofar as it is in their power) over the interests of those who are victims of injustice. — COMMENTARY ON Isaiah 19:60.18