Church Fathers on Luke 11:31

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.

That you may know that the people of the Synagogue are treated with dishonor, while the blessedness of the Church is increased. But as Jonas was a sign to the Ninevites, so also will the Son of man be to the Jews. Hence it is added, They seek a sign; and there shall no sign. be given them but the sign of Jonas the prophet.

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,…