29 When the crowds were increasing, he began to say, "This generation is an evil generation; it seeks a sign, but no sign shall be given to it except the sign of Jonah. 30 For as Jonah became a sign to the men of Nin'eveh, so will the Son of man be to this generation. 31 The queen of the South will arise at the judgment with the men of this generation and condemn them; for she came from the ends of the earth to hear the wisdom of Solomon, and behold, something greater than Solomon is here. 32 The men of Nin'eveh will arise at the judgment with this generation and condemn it; for they repented at the preaching of Jonah, and behold, something greater than Jonah is here.
33 "No one after lighting a lamp puts it in a cellar or under a bushel, but on a stand, that those who enter may see the light. 34 Your eye is the lamp of your body; when your eye is sound, your whole body is full of light; but when it is not sound, your body is full of darkness. 35 Therefore be careful lest the light in you be darkness. 36 If then your whole body is full of light, having no part dark, it will be wholly bright, as when a lamp with its rays gives you light."
Matthew Henry's Commentary on Luke 11:29-36
Commentary on Luke 11:29-36
(Read Luke 11:29-36)
Christ promised that there should be one sign more given, even the sign of Jonah the prophet; which in Matthew is explained, as meaning the resurrection of Christ; and he warned them to improve this sign. But though Christ himself were the constant preacher in any congregation, and worked miracles daily among them, yet unless his grace humbled their hearts, they would not profit by his word. Let us not desire more evidence and fuller teaching than the Lord is pleased to afford us. We should pray without ceasing that our hearts and understandings may be opened, that we may profit by the light we enjoy. And especially take heed that the light which is in us be not darkness; for if our leading principles be wrong, our judgment and practice must become more so.