3 “In that hour came the disciples unto Jesus, saying, Who then is the greatest in the kingdom of heaven?”
The disciples experienced some feeling of human weakness; wherefore the evangelist also adds this note, saying, “In that hour;” when He had preferred him to all. For of James too, and John, one was a firstborn son, but no such thing as this had He done for them.
Then, being ashamed to avow their feeling, they say not indeed openly, “Wherefore have you preferred Peter to us?” or, “Is he greater than we are?” for they were ashamed; but indefinitely they ask, “Who then is greater?” For when they saw the three preferred, they felt nothing of the kind; but now that the honor had come round to one, they were vexed. And not for this only, but there were many other things which they put together to kindle that feeling. For to him He had said, “I will give you the keys;” to him, “Blessed are you, Simon Barjona;” to him here, “Give unto them for me and you;” and seeing too in general how freely he was allowed to speak, it somewhat fretted them.
And if Mark says, that they did not ask, but reasoned in themselves, that is nothing contrary to this. For it is likely that they did both the one and the other, and whereas before, on another occasion, they had had this feeling, both once and twice, that now they did both declare it, and reason among themselves.
But to you I say, “Look not to the charge against them only, but consider this too; first, that they seek none of the things of this world; next, that even this passion they afterwards laid aside, and give up the first place one to another.” But we are not able to attain so much as unto their faults, neither do we seek, “who is greatest in the kingdom of heaven;” but, who is greatest in the earthly kingdom, who is wealthiest, who most powerful.
What then says Christ? He unveils their conscience, and replies to their feeling, not merely to their words. “For He called a little child unto Him,” says the Scripture, “and said, Unless you are converted, and become as this little child, you shall not enter into the kingdom of heaven.” “Why, you,” He says, “inquire who is greatest, and are contentious for first honors; but I pronounce him, that is not become lowest of all, unworthy so much as to enter in there.”
And full well does He both allege that pattern, and not allege it only, but also set the child in the midst, by the very sight abashing them, and persuading them to be in like manner lowly and artless. Since both from envy the little child is pure, and from vainglory, and from longing for the first place; and he is possessed of the greatest of virtues, simplicity, and whatever is artless and lowly.
Not courage then only is wanted, nor wisdom, but this virtue also, humility I mean, and simplicity. Yea, and the things that belong to our salvation halt even in the chiefest point, if these be not with us.
The little child, whether it be insulted and beaten, or honored and glorified, neither by the one is it moved to impatience or envy, nor by the other lifted up.
Do you see how again He calls us on to all natural excellencies, indicating that of free choice it is possible to attain them, and so silences the wicked frenzy of the Manichæans? For if nature be an evil thing, wherefore does He draw from hence His patterns of severe goodness?
And the child which He set in the midst I suppose to have been a very young child indeed, free from all these passions. For such a little child is free from pride and the mad desire of glory, and envy, and contentiousness, and all such passions, and having many virtues, simplicity, humility, unworldliness, prides itself upon none of them; which is a twofold severity of goodness; to have these things, and not to be puffed up about them.
Wherefore He brought it in, and set it in the midst; and not at this merely did He conclude His discourse, but carries further this admonition, saying, “And whoso shall receive such a little child in my name, receives me.”
“For know,” says He, “that not only, if you yourselves become like this, shall you receive a great reward; but also if for my sake ye honor others who are such, even for your honor to them do I appoint unto you a kingdom as your recompence.” Or rather, He sets down what is far greater, saying, “he receives me. So exceedingly dear to me is all that is lowly and artless.” For by “a little child,” here, He means the men that are thus simple and lowly, and abject and contemptible in the judgment of the common sort.
Source: Homilies on the Gospel of St. Matthew (New Advent)