No one lights a lamp and hides it in a jar or puts it under a bed. Instead, he puts it on a stand, so that those who come in can see the light. For there is nothing hidden that will not be disclosed, and nothing concealed that will not be known or brought out into the open. Therefore consider carefully how you listen. Whoever has will be given more; whoever does not have, even what he thinks he has will be taken from him.
I don’t think this verse is referring to shining one’s own light or having one’s secrets exposed. I think God is the lamp who is not hiding under the bed, but rather, is offering knowledge for the taking.
As for the rest of the teaching, well, I’m thinking that when you have knowledge of God, embrace it and look for more, you get more. When you ignore the knowledge you’ve been blessed with, it goes away. It all comes down to personal choice.
There are some things which have been concealed that God will bring out into the open when you look for them. Sometimes those things are unsettling, particularly when they conflict with whatever religious framework you subscribe to. I often ask God questions and then become blown away with the answers I get. When that happens, my response is often to shut down.
For me, what “shutting down” looks like is my becoming very interested in shopping, the state of my manicure and making the perfect pan of brownies. When I get into that mode and stay there for a while, I look very well put together, but my knowledge starts slipping as I begin to feel disconnected from the Source. I usually reconnect myself pretty quickly, and then things start flowing again, with me attempting to not become too overwhelmed.
It’s a balancing act, and when I’m on that tightrope, I am learning to be brave in the face of uncertainty and theological lonesomeness.