Mark 4:22

Why does the Lord call us the light of the world? Why has he compared us to a city on a hill? Are we not called to shine in the midst of darkness, and stand up high for those most sunk down? If you hide your lamp beneath a bushel, you will soon notice that you yourself will be in the dark. You will find others bumping into you. So what can you do to illumine the world? Let your faith produce good works. Be a reflection of God's light. The good is not preoccupied with darkness. It rejoices in being seen. It exults over the very pointings which are made at it. Christian modesty not only wishes to be modest, but also it wishes to be beheld as what it actually is.

(non occ.) After the question of the disciples concerning the parable, and its explanation, He well subjoins, And he said unto them, Is a candle brought, &c. As if he said, A parable is given, not that it should remain obscure, and hidden as if under a bed or a bushel, but that it should be manifested to those who are worthy. The candle within us is that of our intellectual nature, and it shines either clearly or obscurely according to the proportion of our illumination. For if meditations which feed the light, and the recollection with which such a light is kindled, are neglected, it is presently extinguished.

(in Matt. Hom. 15) Or else, There is nothing hid; as if He said, If ye conduct your life with care, accusation will not be able to obscure your light.

For nothing is hidden, except to be made manifest; nor is anything secret, except to come to light. He says, do not be ashamed of the Gospel of God, but among the darkness of persecutors, raise the light of the word upon the candlestick of your body, retaining with a steadfast mind that day of ultimate recompense, where the Lord will illuminate the hidden things of darkness, and will reveal the thoughts of hearts. For then both praise from God awaits you, and eternal punishment for the adversaries of the truth.

(in Marc. i. 20) Or, because the time of our life is contained under a certain measurement of Divine Providence, it is rightly compared to a bushel. But the bed of the soul is the body, in which it dwells and reposes for a time. He therefore who hides the word of God under the love of this transitory life, and of carnal allurements, covers his candle with a bushel or a bed. But he puts his light on a candlestick, who employs his body in the ministry of the word of God; therefore under these words He typically teaches them a figure of preaching. Wherefore it goes on, For there is nothing hidden, which shall not be revealed, nor is there any thing made secret, which shall not come abroad. As if He said, Be not ashamed of the Gospel, but amidst the darkness of persecution raise the light of the word of God upon the candlestick of your body, keeping fixedly in your mind that day, when the Lord will throw light upon the hidden places of darkness, for then everlasting praise awaits you, and everlasting punishment your adversaries.

"And nothing is hidden that will not be revealed." Whatever anyone does in secret—whether good or evil—will all be made manifest both here and especially in the age to come. What was more hidden than God? Yet even He was manifested in the flesh.

For each of us, whether he have done good or evil, is brought to light in this life, much more in that which is to come. For what can be more hidden than God, nevertheless He Himself is manifested in the flesh.

The hidden and secret thing is the parable of the seed, which comes forth to light, when it is spoken of by the Lord.