This morning, after you were awake, you passed through your bedroom door.  Then you went through the bathroom door.  Later you entered, through a door, the dining room.  After a time, with your father and mother, you left the house through the outside door.  You walked down the street and here you are in church, having entered through yonder door.  Every day you are passing through various doors.  What wonderful things doors are!  I wonder who invented doors.  What would we do without doors?

There are doors to houses and there are doors to life.  Let me tell you about them.  A door is made of wood.  What beautiful wood is in these church doors!  The doors of life are made of our will.  By the exercise of our will we open and close whatsoever doors of life we choose.

The doors of our houses swing on hinges.  Heavy doors seem as light as a feather because they are so delicately hung upon hinges.  The hinges of the doors of life are made not of brass or iron, but of love.

When, in a little while, you leave this church you will take hold of a knob and pull open the door.  The doors of life have knobs.  Those knobs are called courtesy.  You can open well nigh any door you choose if only you will use the knob courtesy.

What about the lock?  Yes, doors have locks.  So also have the doors of life.  Can you guess what locks the door of life?  It is faith.  If you have faith, faith in God, faith in the Saviour, faith in things that are true and pure, you need never fear that your house of life will be broken into by burglars.  You are secure if you have the lock of faith.  Now here is a strange paradox, namely—­you lock your door only by opening it.  Open your door to the Master.

MEMORY VERSE, Revelations 3:  20

    “Behold, I stand at the door and knock; if any man hear my voice
    and open the door, I will come in to him, and will sup with him
    and he with me.”

MEMORY HYMN [282]

    "O Jesus, thou art standing."

CHEAPEST AND BEST

A business man would not consider this subject a very good advertisement.  He believes that the best things are never cheapest.  There are a few instances however in which that is not the case.

First, the air we breathe.  It does not cost us anything, it isn’t metered out to us, so we have a saying, “as free as air.”  You go down to the drug store and buy a bottle of perfume.  A good perfume will cost not less than a dollar a bottle.  The air we breathe is infinitely purer and better than the costliest perfume.

Second, the water we drink.  Do you like ice cream soda?  I am sure you do.  If you do not you are not a normal girl or boy.  How much do you have to pay for a good ice cream soda?  That depends; some places it is ten cents and some fifteen cents.  You think you might like to have ice cream soda every meal, but you would soon tire of it.  The water you drink is necessary, and it costs you nothing.