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Mon · Sep 21, 2026 · Ordinary Time

Saint Matthew, Apostle and Evangelist

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First Reading · Ephesians 4:1-7, 11-13

1I therefore, a prisoner in the Lord, beseech you that you walk worthy of the vocation in which you are called:2With all humility and mildness, with patience, supporting one another in charity.3Careful to keep the unity of the Spirit in the bond of peace.4One body and one Spirit: as you are called in one hope of your calling.5One Lord, one faith, one baptism.6One God and Father of all, who is above all, and through all, and in us all.7But to every one of us is given grace, according to the measure of the giving of Christ.11And he gave some apostles, and some prophets, and other some evangelists, and other some pastors and doctors:12For the perfecting of the saints, for the word of the ministry, for the edifying of the body of Christ:13Until we all meet into the unity of faith and of the knowledge of the Son of God, unto a perfect man, unto the measure of the age of the fulness of Christ:

commentary

The chain of "one" running through verses 4 to 6 — one body, one Spirit, one hope, one Lord, one faith, one baptism, one God and Father — is the argument rather than its ornament. Calmet counts the first three as the three great reasons Christians have to love one another: one body of which Christ is the head, one Spirit animating all, one hope of the same eternal happiness. Witham marks v. 1 as the hinge where the epistle turns from doctrine to the practice of Christian virtues, so everything after it is consequence. The difficulty is the last phrase: in mensuram aetatis plenitudinis Christi, "unto the measure of the age of the fulness of Christ" (v. 13). Behind the Latin aetatis stands the Greek hēlikia, which the older versions render both aetas, age, and statura, stature — and the whole later dispute rides on which of the two Paul meant.

Witham reports the split without flattening it. Some of the ancient interpreters take the perfect man eschatologically: after the resurrection the elect will have bodies every way perfect, and some conjectured that all who rise happily will appear about thirty, the stature and age of Christ when He suffered. Aquinas records that Augustine allowed this — the risen raised as they would have been at thirty-three — while preferring the other reading. The Greek interpreters understand a spiritual perfection in this life, the members of the mystical body meeting in the unity of faith and increasing in grace by imitating Christ. Witham judges the second more agreeable to what follows, since the point is that we may no longer be children tossed to and fro: Jerome glosses the next word as deceit, Augustine as illusion, and Chrysostom hears a metaphor taken from men who cheat at dice to draw everything to themselves. Chrysostom's rule then decides it — each must become perfect in the state in which he is placed, by increasing in the knowledge and love of God, and that knowledge and love are the full measure of a Christian. The measure is not a physique awaited; it is a stature grown into.

Cyprian, quoted on v. 5, refuses to soften the political comparison: as rebellion is the bane of kingdoms and concord their preservation, so schism and diversity of faith are the calamity of the Church — "he that resisteth Peter's chair, doth he trust that he is in the Church?" Hilary, writing to Constantius, names the mechanism rather than the offence: there are now as many faiths as there are wills and as many doctrines as manners, modes of faith written as men please and understood as they please; and once more faiths than one are made, men begin by falling from the only faith and end with no faith at all. The live form of that is not heresy in the old sense but the assumption that a creed is a preference, sincerely held and therefore rightly held. Against it Paul sets a measure outside the self — grace given to each according to the measure of the giving of Christ (v. 7), given, Chrysostom notes, by no merit of ours. Tirinus draws the consequence: keep the unity by refusing to envy the graces given to someone else, since they came from the hand that measured out yours. What holds is not agreement reached but the bond of peace — a rope, and it has to be kept.

· sources ·

The complete public-domain commentary this reading's note draws from, unabridged. Every claim in the note traces to a passage here.

First Reading Ephesians 4:1-7, 11-13

Haydock Catholic Bible Commentary · Public Domain
4:1

Here begins the second part of this epistle, in which he exhorts them to the practice of Christian virtues. (Witham)

4:4

In one hope of your vocation. The three great reasons that we have to love one another are contained in this verse, because we have but one body, of which Christ is the head. We are all animated by the same spirit, viz. the Holy Ghost, who is given to us all, and we all live in the same hope of eternal happiness. (Calmet)

4:5

This contains some more reasons why Christians should love one another. We are all servants of the same God, believe the same mysteries, and receive the same sacraments, whoever may be the dispenser of them. --- One faith. As rebellion is the bane of commonwealths and kingdoms, and peace and concord the preservation of the same; so is schism, and diversity of faith or fellowship in the service of God, the calamity of the Church: and peace, unity, and uniformity, the special blessing of God therein. St. Cyprian, in his book on the unity of the Church, writeth thus: "One Church, for one is my dove. This unity of the Church, he that holdeth not, doth he think he holdeth the faith? He that withstandeth or resisteth the Church, he that resisteth Peter's chair, upon which the Church was built, doth he trust that he is in the Church?" And again, Ep. xl. "There is one God, and one Christ, and one Church, and one chair, by our Lord's voice founded upon Peter. To set up another altar, or to constitute another priesthood, besides the one altar and the one priesthood, is impossible. Whosever gathereth elsewhere scattereth. It is adulterous, it is impious, it is sacrilegious, whatsoever is instituted by man to the breach of God's disposition. Get ye far from such men: they are blind, and leaders of the blink." St. Hilary also applies this text against the Arians thus: "Perilous and miserable is it that there are now among them as many faiths as wills, and as many doctrines as manners; whilst modes of faith are written as men will, or as they will, so are understood. Whereas the one truth teaches there is but one God, one Lord, one baptism, and also one faith: hence whilst more faiths are made, they begin by falling from that which is the only faith, and end in having no faith at all." (St. Hilary, lib. ad Constantium Augustum.)

4:7

To every one of us is given grace according to the measure of the gift of Christ. That is, as it hath pleased Christ to bestow his free gifts upon us; to shew, says St. John Chrysostom, that it was not according to any merit of ours. The words also shew that Christ is the giver and author of graces, and consequently the true God. (Witham) --- We must endeavour by all means in our power to preserve this unity, especially by avoiding jealousy, or being envious of the graces which have been given to our neighour; considering that they all proceed from the same God, who divides to each one as he pleaseth. (Tirinus)

4:11

Some indeed he gave to be apostles, &c. It is said (1 Corinthians xii. 28.) that God (even with the Greek article) gave some to be apostles, &c. and here it is said of Christ: another proof that Christ is the true God. (Witham)

4:13 · bibliography — editions & variants cited above

In mensuram ætatis plenitudinis Christi; Greek: eis metron elikias (ætatis vel staturæ) Greek: tou pleromatos tou Christou. See St. Augustine, lib. xxii. de Civ. Dei, chap. xv. et seq. tom. vii. p. 678.; St. Jerome in Epitaphio Paulæ. tom. iv. part 2. p. 635.; St. John Chrysostom, hom. xi.

4:13–14

Unto a perfect man, unto the measure of the age [2] of the fulness of Christ; that is, according to the measure of the full and perfect age of Christ. Of the ancient interpreters, some expound this of what shall happen in the next world, after the resurrection, when all the elect shall have bodies every way perfect; and as some conjecture, (when all who rise by a happy resurrection) shall seem to be about thirty, of the stature and age of Christ when he suffered. But others, especially the Greek interpreters, understand this verse of a spiritual perfection in this life, by which the members of Christ's mystical body meet in the unity of faith, and increase in grace and virtue by imitating Christ, and following his doctrine and example. And this seems more agreeable to what follows: that we may not now be children, tossed to and fro by the wickedness,[3] of men. The Greek word, as St. Jerome observes, may signify by the deceit or fallacy of men; by illusion, says St. Augustine. And St. John Chrysostom tells us it is spoken by a metaphor, taken from those who cheat at dice, to gain all to themselves, to draw men into errors and heresies. Such, about that time, were the disciples of Simon the magician. (Witham) --- Every one must labour to become perfect in the state in which he is placed, by increasing in the knowledge and love of God, which knowledge and love of God constitute the full measure of a Christian. (St. John Chrysostom) --- St. Augustine also admits to another interpretation of this place, but prefers the former. According to him, it may mean: that all people, at the resurrection, will be raised in such a state as they would have had if they lived to the age of Christ, viz. thirty-three years. (St. Thomas Aquinas) --- This text of the apostle, assuring to the one true Church a perpetual and visible succession of pastors, in the ministry, successors of the apostles, warranted the holy Fathers in the early ages of the Church, as it does Catholics of the present day, to try all seceders by the most famous succession of the popes or bishops of Rome. See this in St. Irenæus, lib. iii. chap. 3; Tertullian, in præscript. Optatus. lib. ii. contr. Parmen.; St. Augustine, cont. ep. Manic. chap. iv., Ep. 165 & alibi.; St. Epiphanius, hæres. 27.