BOLDness, or ignorance?

Tara likes to watch CSI Miami, she's a semi-regular watcher of CSI the original but for whatever reason, she just prefers CSI Miami. I watch it with her on occasion and it's interesting to watch the characters on there. They will get a warrant and go search people's houses, some times the officers try to search without a warrant. The come up on several types of people.
First, there are those who have genuinely done nothing wrong. They immediately let the Investigators know that they can search anything they need to and can count on their full cooperation. These people are without any sign of guilt so they let them right in to do the full search.
Then, you have the people who are guilty but think that no one will figure it out. They too immediately let the investigators know that they can search anything they need to and can count on their full cooperation. These people are full of guilt, but doing everything they can to make it seem as though they are completely innocent. They think that either they have committed the crime in a way that it won't be found out, or they think they have swept the place clean of any and all incriminating evidence.
Finally, we have the people who are guilty, who will not let anyone in without a warrant and even then they make things difficult. They know that they will be found out or they are unsure of their abilities and the abilities of others to keep the crime concealed.
Psalm 139 closes out with verses that strike at my very soul. I think they are probably the boldest statements in the BIble made toward God that don't need to be said. Let me re-state that. These are the boldest words spoken by man that don't need to be spoken.
Search me, O God, and know my heart;
test me and know my anxious thoughts.
See if there is any offensive way in me,
and lead me in the way everlasting.
I can't imagine me, a well published sinner ever telling God to search me and see if there is anything incriminating about me. But, then I know I don't have to. God sees it when it happens, he sees the temptation before it appears and sees me act on it before it is complete. So why would I say that? Why would the Psalmist say that?
Is it just plain bold? Is he really one of the criminals who thinks he can pull one over on God? Or is he ignorant in believing that God does not already know all those things.
I'm sticking with boldness. He is in affect saying, "I know you know my thoughts, my actions and my every move, but I want you to search them and create conviction in my life so that I might bring more honor and glory to you God!"
So when is the last time you asked God to search you, to dig into the things that we do reglularly and reveal to you the things that are offensive and hold you back from intimacy with God?
Thanks for reading and have a great day!