29 And when a great number of people came together to him, he said, This generation is an evil generation: it is looking for a sign and no sign will be given to it but the sign of Jonah. 30 For even as Jonah became a sign to the Ninevites, so will the Son of man be to this generation. 31 The queen of the South will come up on the day of judging and give her decision against the men of this generation: for she came from the ends of the earth to give ear to the wisdom of Solomon; and now something greater than Solomon is here. 32 The men of Nineveh will come up in the day of judging and give their decision against this generation: for they were turned away from their sins at the preaching of Jonah; but now something greater than Jonah is here.
33 No man, when the light has been lighted, puts it in a secret place, or under a vessel, but on its table, so that those who come in may see the light. 34 The light of the body is the eye: when your eye is true, all your body is full of light; but when it is evil, your body is dark. 35 So take care that the light which is in you is not dark. 36 If, then, all your body is light, with no part of it dark, it will be completely full of light, as when a flame with its bright shining 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.