The book of Philippians is the New Testament book par excellence about Christian joy.
No less than 16 times in its four chapters does Paul refer to joy. There is 3.1: 'Finally, my brethren, rejoice in the Lord!'; 4.4: 'Rejoice in the Lord always'; and 4.10: 'I rejoice greatly in the Lord'. Notice two things about the phrase 'Rejoice in the Lord'.
Firstly, it is a command. You may ask: 'How can I be commanded to be joyful?' But, you see, there is never a circumstance in which a Christian finds himself where there are not adequate reasons to be joyful.
