Jesus never intended for us to have just a little bit of happiness in our lives. He wants us to have fullness of joy-no matter our circumstances. The book of Philippians is an invitation to joy, written by an imprisoned apostle Paul to believers in the early church. His refrain throughout the letter was "Rejoice!" His joy was unshakeable. His peace was secure. His hope was abounding. But how did he find profound contentment in the midst of such difficult...