William Burkitt on Luke 11:33

Our Saviour in these words does these two things:

1. He declares, that although his ministry had no effect upon the proud and obstinate Pharisees, yet he would not hide the light which he came into the world to bring, nor conceal that heavenly doctrine which his Father had committed to him to communicate to the children of men; teaching us that such as are enlightened by God, with the knowledge of his word and will, ought not to conceal and hide this knowledge within themselves, but communicate it to others, and improve it for the good and benefit of others: No man that lighteth a candle putteth it under a bushel.

2. Our Saviour here discovers the reason why the Pharisees continued blind under so clear a light as that of his ministry; namely, because the eye of their understanding was darkened, not so much with ignorance as with prejudice, whereby they opposed Christ and his holy doctrine: for if the mind be clearly enlightened by the word and Spirit of God, that light will diffuse and spread itself in the soul, as the bright shining of a candle does in the house, enlightening all the inward faculties, and directing all the outward actions, and communicating its light also to the enlightening of others.