The Difference between Happiness and Joy

“Happiness is caused by things that happen around me, and circumstances will mar it; but joy flows right on through trouble; joy flows on through the dark; joy flows in the night as well as in the day; joy flows all through persecution and opposition. It is an unceasing fountain bubbling up in the heart; a secret spring the world can’t see and doesn’t know anything about. The Lord gives His people perpetual joy when they walk in obedience to Him.” — D.L. Moody