First Reading — Acts 7:55-60
Responsorial Psalm — Psalm 97:1-2, 6-7, 9
Tertullian
On 96:1
For if the earth has to suffer either joy or injury, it is simply on people's account, that they may suffer the joy or the sorrow through the events that happen to their dwelling place, whereby they will rather have to pay the penalty that, simply on their account, even the earth must suffer. When, therefore, God even threatens the earth, I would prefer saying that he threatens the flesh. So likewise, when he makes a promise to the earth, I would rather understand him as promising the flesh; as in that passage of David: "The Lord is King, let the earth be glad," meaning the flesh of the saints, to which appertains the enjoyment of the kingdom of God.
On 96:3
If, however, those whom God has accepted and the believers shall attain salvation, it is necessary that those whom God has rejected and the unbelieving should incur the opposite issue, even the loss of salvation. Now here is a judgment, and those who hold it out before us belong to the Creator. Whom else than the God of retribution can I understand by the one who shall "beat his servants with stripes," either "few or many," and shall exact from them what he had committed to them? Whom is it suitable for me to obey, but him who remunerates? Your Christ proclaims, "I have come to send fire on the earth." That most lenient being, the Lord who has no hell, not long before had restrained his disciples from demanding fire on the churlish village. Whereas he burned Sodom and Gomorrah with a tempest of fire. Of him the psalmist sang, "A fire shall go out before him and burn up his enemies round about." By Hosea he uttered the threat, "I will send a fire on the cities of Judah"; and by Isaiah, "A fire has been kindled in my anger." He cannot lie. If it is not he who spoke even out of the burning bush, it can be of no importance what fire you insist on being understood.
Second Reading — Revelation 22:12-14, 16-17, 20
Clement of Rome
On 22:12
What shall we do, then, brethren? Shall we become slothful in well-doing, and cease from the practice of love? God forbid that any such course should be followed by us! But rather let us hasten with all energy and readiness of mind to perform every good work. For the Creator and Lord of all Himself rejoices in His works. For by His infinitely great power He established the heavens, and by His incomprehensible wisdom He adorned them. He also divided the earth from the water which surrounds it, and fixed it upon the immoveable foundation of His own will. The animals also which are upon it He commanded by His own word into existence. So likewise, when He had formed the sea, and the living creatures which are in it, He enclosed them [within their proper bounds] by His own power. Above all, with His holy and undefiled hands He formed man, the most excellent [of His creatures], and truly great through the understanding given him-the express likeness of His own image. For thus says God: "Let us make man in Our image, and after Our likeness. So God made man; male and female He created them." [Genesis 1:26-27] Having thus finished all these things, He approved them, and blessed them, and said, "Increase and multiply." [Genesis 1:28] We see, then, how all righteous men have been adorned with good works, and how the Lord Himself, adorning Himself with His works, rejoiced. Having therefore such an example, let us without delay accede to His will, and let us work the work of righteousness with our whole strength.
The good servant receives the bread of his labour with confidence; the lazy and slothful cannot look his employer in the face. It is requisite, therefore, that we be prompt in the practice of well-doing; for of Him are all things. And thus He forewarns us: "Behold, the Lord [cometh], and His reward is before His face, to render to every man according to his work." He exhorts us, therefore, with our whole heart to attend to this, that we be not lazy or slothful in any good work. Let our boasting and our confidence be in Him. Let us submit ourselves to His will. Let us consider the whole multitude of His angels, how they stand ever ready to minister to His will. For the Scripture saith, "Ten thousand times ten thousand stood around Him, and thousands of thousands ministered unto Him, [Daniel 7:10] and cried, Holy, holy, holy, [is] the Lord of Sabaoth; the whole creation is full of His glory." [Isaiah 6:3] And let us therefore, conscientiously gathering together in harmony, cry to Him earnestly, as with one mouth, that we may be made partakers of His great and glorious promises. For [the Scripture] saith, "Eye hath not seen, nor ear heard, neither have entered into the heart of man, the things which He hath prepared for them that wait for Him." [1 Corinthians 2:9]
Gospel — John 17:20-26
Hilary of Poitiers
On 17:20
(vii de Trin) And this unity is recommended by the great example of unity: As Thou, Father, art in Me, and I in Thee, that they also may be one in Us, i. e. that as the Father is in the Son, and the Son in the Father, so, after the likeness of this unity, all may be one in the Father and in the Son.
On 17:20
(viii. de Trin) Heretics endeavouring to get over the words, I and My Father are one, as a proving unity of nature, and to reduce them to mean a unity simply of natural love, and agreement of will, bring forwards these words of our Lord’s as an example of this kind of unity: That they may be all one, as Thou, Father, art in Me, and I in Thee. But though impiety can cheat its own understanding, it cannot alter the meaning1 of the words themselves. For they who are born again of a nature that gives unity in life eternal, they cease to be one in will merely, acquiring the same nature by their regeneration: but the Father and Son alone are properly one, because God, only-begotten of God, can only exist in that nature from which He is derived.
On 17:20
(viii. de Trin) By this giving and receiving of honour, then, all are one. But I do not yet apprehend in what way this makes all one. Our Lord, however, explains the gradation and order in the consummating of this unity, when He adds, I in them, and Thou in Me; so that inasmuch as He was in the Father by His divine nature, we in Him by His incarnation, and He again in us by the mystery of the sacrament, a perfect union by means of a Mediator was established.
On 17:21
(viii. de Trin) Or, the world will believe that the Son is sent from the Father, for that reason, viz. because all who believe in Him are one in the Father and the Son.