Far from originating joy, humans are meant to be like an echo, reverberating with God’s joy and sending it back to Him. The very word rejoice contains (in the prefix “re”) this idea of “over again” or “back.” The message of joy bears repeating, for in this dark world we need to hear about joy again and again. Paul obviously thought so when he wrote from a prison cell, “I will say it again: Rejoice!” True joy is tireless. It’s like a little child squealing, “Do it again, Daddy!” to which our heavenly Daddy replies heartily, “Yes, let’s do it again! And again and again!”
— Mike Mason, Champagne for the Soul, p. 8