Luke 11:29-36

As the crowds were increasing, he began saying, “This generation   is an evil generation.   It demands a sign,   but no sign will be given to it except the sign of Jonah.   , For just as Jonah became a sign to the people of Nineveh, so also the Son of Man   will be to this generation. The queen of the south   will rise up at the judgment   with the men of this generation and condemn   them, because she came from the ends of the earth to hear the wisdom of Solomon,   and look — something greater than Solomon is here. The men of Nineveh will stand up at the judgment with this generation and condemn it, because they repented at Jonah’s preaching, and look — something greater than Jonah is here. “No   one lights a lamp   and puts it in the cellar or under a basket,   but on a lampstand, so that those who come in may see its light. Your eye is the lamp of the body.   When your eye is healthy, your whole body is also full of light. But when it is bad,   your body is also full of darkness. Take care, then, that the light in you is not darkness. If, therefore, your whole body is full of light, with no part of it in darkness, it will be entirely illuminated, as when a lamp shines its light on you.”