And she said, "The Philistines are upon you, Samson!" So he awoke from his sleep, and said, "I will go out as before, at other times, and shake myself free!" But he did not know that the Lord had departed from him."
Judges 16:19-20 (NKJV)
People who are unconscious do not realize that they are unconscious. That may sound humorous, but it is just a fact. To be conscious means to be aware of something, you are aware of what is going on around you. If you are unconscious you are unaware of things and you do not know what is going on. You can make yourself more or less aware, or conscious, of something by how much you pay attention to it. The things you focus on are what you are most conscious and aware of.
In the book of Judges, we find the story of Samson, he was used by God to defeat the enemies of Israel. In Judges 16 we see the downfall of Samson. Samson was once very connected to and conscious of God. But the point came, as we see in Judges 16:20, that Samson was no longer connected to God, but Samson did not even realize it. It is interesting to see how in verse 19 that Samson was "lulled to sleep" right before it talks about him not realizing he had lost his connection to God.
As Christians we need to be God conscious, we need to have an awareness of God in our life. By spending time reading and studying the Bible, spending time with God in prayer, and fellowshipping with other believers we can be more conscious of God. But today, too many Christians are being lulled to sleep because they are paying more attention to everything in life except God and they have become to some extent separated from God, and they don't even realize it. We need to be more conscious of God than anything else.