Luke 11:29-32
While still more people gathered in the crowd, Jesus said to them,
“This generation is an evil generation;
it seeks a sign, but no sign will be given it,
except the sign of Jonah.
Just as Jonah became a sign to the Ninevites,
so will the Son of Man be to this generation.
At the judgment
the queen of the south will rise with the men of this generation
and she will condemn them,
because she came from the ends of the earth
to hear the wisdom of Solomon,
and there is something greater than Solomon here.
At the judgment the men of Nineveh will arise with this generation
and condemn it,
because at the preaching of Jonah they repented,
and there is something greater than Jonah here.”
-------
So what does Jonah and the Queen of the South have to do with what Christ is trying to say? This is a good passage to refer to "the dust." For those new here - when I say "the dust", I'm referring to the Church Fathers, Doctors of the Church, and Saints. The following is from the "Catena Aurea" (aka "Golden Chain"), which St. Thomas Aquinas compiled in the 13th century. It is a collection of scriptural commentaries from some of the greatest teachers of the first millenium of the Church.
BEDE (7th-8th Century); Our Lord had been assailed with two kinds of questions, for some accused Him of casting out devils through Beelzebub, to whom up to this point His answer was addressed; and others tempting Him, sought from Him a sign from heaven, and these He now proceeds to answer. As it follows, And when the people were gathered thick together, he began to say, This is an evil generation, &c.
BASIL (4th Century); A sign is a thing brought openly to view, containing in itself the manifestation of something hidden, as the sign of Jonas represents the descent to hell, the ascension of Christ, and His resurrection from the dead. Hence it is added, For as Jonas was a sign to the Ninevites, so shall also the Son of man be to this generation. He gives them a sign, not from heaven, because they were unworthy to see it, but from the lowest depths of hell; a sign, namely, of His incarnation, not of His divinity; of His passion, not of His glorification.
AMBROSE (4th Century); Now as the sign of Jonas is a type of our Lord's passion, so also is it a testimony of the grievous sins which the Jews have committed. We may remark at once both the mighty voice of warning, and the declaration of mercy. For by the example of the Ninevites both a punishment is denounced, and a remedy promised. Hence even the Jews ought not to despair of pardon, if they will but practice repentance.
BEDE; The queen of the South came from the utmost parts of the earth to hear the wisdom of Solomon; and, behold, greater than Solomon is here. Here in this place is not the pronoun, but the adverb of place, that is, "there is one present among you who is incomparably superior to Solomon." He said not, "I am greater than Solomon," that he might teach us to be humble, though fruitful in spiritual graces. As if he said, "The barbarian woman hastened to hear Solomon, taking so long a journey to be instructed in the knowledge of visible living creatures, and the virtues of herbs. But you when you stand by and hear Wisdom herself teaching you invisible and heavenly things, and confirming her words with signs and wonders, are strangers to the word, and senselessly disregard the miracles."
BEDE; But if the queen of the South, who doubtless is of the elect, shall rise up in judgment together with the wicked, we have a proof of the one resurrection of all men, good as well as bad, and that not according to Jewish fables to happen a thousand years before the judgment, but at the judgment itself.
AMBROSE; Herein also while condemning the Jewish people, He strongly expresses the mystery of the Church, which in the queen of the South, through the desire of obtaining wisdom is gathered together from the uttermost parts of the whole earth, to hear the words of the Peacemaking Solomon; a queen plainly whose kingdom is undivided rising up from different and distant nations into one body.
CHRYSOSTOM (4th-5th Century). The judgment of condemnation comes from men like or unlike to those who are condemned. From like, for instance, as in the parable of the ten virgins, but from unlike, when the Ninevites condemn those who lived at the time of Christ, that so their condemnation might be the more remarkable. For the Ninevites indeed were barbarians, but these Jews. The one enjoying the prophetic teaching, the other having never received the divine word. To the former came a servant, to the latter the Master, of whom the one foretold destruction, the other preached the kingdom of heaven. To all men then was it known that the Jews ought rather to have believed, but the contrary happened; therefore he adds, For they repented at the preaching of Jonas, and, behold, a greater than Jonas is here.
AMBROSE; Now in a mystery, the Church consists of two things, either ignorance of sin, which has reference mainly to the queen of the South, or ceasing to sin, which relates indeed to the repentant Ninevites. For repentance blots out the offense, wisdom guards against it.