“What you think of God shapes your whole world-view. For one thing, if you have a low view of God, you’ll have a higher view of yourself than you ought to have, and that’s the sin of pride. So how we think about God has major practical ramifications.” – Phil Johnson
While traveling this week, I took the opportunity to listen to this sermon by Phil Johnson. It is an excellent treatise on secret sin and I highly recommend you listen to it. It has also been transcribed and if you prefer to read it and ponder over it, you can do that here.
Rated R For Reformed 
I use a sermon audio app; I went over there to download this sermon