Sing aloud to God, our strength! Make a joyful shout to the God of Jacob! Raise a song, and bring here the tambourine, the pleasant lyre with the harp. Blow the trumpet at the New Moon, at the full moon, on our feast day. For it is a statute for Israel, an ordinance of the God of Jacob.
The idealism and self-sacrificing commitment of that wartime generation are harder to find in our society today. But as Christians, we are challenged to rediscover that commitment. Jesus is saying to his people today the same sort of thing Uncle Sam said in those posters. Jesus is saying to us, “Your church—my church—needs you!”
What is the goal of the Christian life, and how do we help one another get there? One old catechism says that our chief purpose in life is to glorify and enjoy God forever. This is true. We were created for God’s glory and to proclaim his praises (1 Corinthians 10:31; Ephesians 1:11-12; 1 Peter 2:9). We exist to worship God, and in order to be genuine, this worship must come from the heart. It must be an expression of our real feelings. We adore God above everything else, and we submit to his every command.