
Compare Matthew 5:15; 7:2; 10:26; 13:12
At least three quite distinct thoughts are contained in these verses:
1. Our light should be shown to the world. Or, rather, his light should be manifest in the world through and by us. There’s no point in kindling a lamp and then covering it so that it’s not visible.
2. All secret acts will eventually be made known. So, if we presume that we can get away with things that won’t be seen, we deceive ourselves. No secret will remain a secret forever. God sees and knows all.
3. Those who refuse to hear and to heed will, with time, lose the capacity to do so.