29 But as the crowds thronged together, he began to say, This generation is a wicked generation: it seeks a sign, and a sign shall not be given to it but the sign of Jonas. 30 For as Jonas was a sign to the Ninevites, thus shall also the Son of man be to this generation. 31 A queen of the south shall rise up in the judgment with the men of this generation, and shall condemn them: for she came from the ends of the earth to hear the wisdom of Solomon; and behold, more than Solomon is here. 32 Men of Nineveh shall stand up in the judgment with this generation, and shall condemn it: for they repented at the preaching of Jonas; and behold, more than Jonas is here.
33 But no one having lit a lamp sets it in secret, nor under the corn-measure, but on the lamp-stand, that they who enter in may see the light. 34 The lamp of the body is thine eye: when thine eye is simple, thy whole body also is light; but when it is wicked, thy body also is dark. 35 See therefore that the light which is in thee be not darkness. 36 If therefore thy whole body [is] light, not having any part dark, it shall be all light as when the lamp lights thee with its brightness.
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.