From: Luke 12:1-7
Various Teachings of Jesus
 In the meantime, when so many thousands of the multitude had gathered together that they trod upon one another, He (Jesus) began to say to His disciples first, "Beware of the leaven of the Pharisees, which is hypocrisy.  Nothing is covered up that will not be revealed, or hidden that will not be known.  Whatever you have said in the dark shall be heard in the light, and what you have whispered in private rooms shall be proclaimed upon the housetops."
 "I tell you, My friends, do not fear those who kill the body, and after that, have no more that they can do.  But I will warn you whom to fear: fear Him who, after He has killed, has power to cast into Hell; yes, I tell you, fear Him!  Are not five sparrows sold for two pennies? And not one of them is forgotten before God.  Why, even the hairs of your head are all numbered. Fear not; you are of more value than many sparrows."
3. Most Palestinian houses had a roof in the form of a terrace. There people would meet to chat and while away the time in the hottest part of the day. Jesus points out to His disciples that just as in these get-togethers things said in private became matters of discussion, so too, despite the Pharisees' and scribes' efforts to hide their vices and defects under the veil of hypocrisy, they would become a matter of common knowledge.
6-7. Nothing--not even the most insignificant thing--escapes God, His Providence and the judgment He will mete out. For this same reason no one should fear that any suffering or persecution he experiences in following Christ will remain unrewarded in eternity.
The teaching about fear, contained in verse 5, is filled out in verses 6 and 7, where Jesus tells us that God is a good Father who watches over every one of us--much more than He does over these little ones (whom He also remembers). Therefore, our fear of God should not be servile (based on fear of punishment); it should be a filial fear (the fear of someone who does not want to displease his father), a fear nourished by trust in Divine Providence.
Source: "The Navarre Bible: Text and Commentaries". Biblical text taken from the Revised Standard Version and New Vulgate. Commentaries made by members of the Faculty of Theology of the University of Navarre, Spain. Published by Four Courts Press, Kill Lane, Blackrock, Co. Dublin, Ireland.
Reprinted with permission from Four Courts Press and Scepter Publishers, the U.S. publisher.