Doors, gates and alarms are important.  They serve a purpose for our safety and protection.  They are for our sheltering.  They offer peace of mind.  In a world that presents many different dangers and would-be intruders, doors are very important.  Jesus says, "I am the door."  And just as we realize the importance of doors in our day and time, Jesus is using this statement to draw us into a deeper understanding of who He is and what He provides.