Glory to God in the highest, and on earth peace - Luke 2:14 

These twain are joined together, and none can sunder them. Do you want peace? Your highest aim must be the glory of God. Do you seek God's glory as your highest aim? then, the inevitable result will be the peace that passeth understanding.

Glory to God in the highest. - It was said of the soldiers of the first Napoleon that they were content to die in the ditch if only he rode over them to victory. With their last breath they cried, "Long live the Emperor!" It seemed as though they had lost all thought and care of their own interests so long as glory accrued to his name. So should it be of us. Higher than our own comfort, or success, or popularity, should be the one thought of the glory of our God. Let Christ be honored, loved, exalted, at whatever cost to us.

On earth, peace. - It will come, because when the heart has only one aim to follow, it is delivered from dividing and distracting cares. It will come, because the glory of God is so lofty an aim that it lifts the soul into the atmosphere of the heavenly and eternal world, where peace reigns unbroken. It will come, because we are not greatly troubled by the reverses and alternations of fortune that are incident to all work in this world, since the main object is always secure and beyond fear of failure. What though there be the ebb and flow of the wave, yet the tide is certainly coming up the shore, and will presently stand at high-water mark.

This peace is said in the R. V. to come only to men in whom God is well pleased. Live to please God, and He will breathe on thee His peace. Seek His glory, and He will make thy heart His home. Do His will, and thereby good shall come to thee.