For Generations, God inspired his people to sing songs that prepared their hearts for the greatest event in history: the night a God was born in the flesh as a baby boy.  And how did he announce himself? SONG! 

Zechariah's song shows the heartbeat of the long-suffering Jewish people who had waited so patiently for God to fulfill his promises - and in the miraculous birth of John, Zech sees God's faithfulness in a brand new way.  

When Mary's pregnancy is prophetically confirmed by her cousin, she breaks into song.  Why? Because she's seeing God's justice like never before.  His Justice makes us sing! 

Songs shape our hopes and expectations - they affect the way we see the world.  For generations, the "Servant Songs" in Isaiah shaped the hopes of Israel, and shape us still. 

The parable of the sheep and goats is often used to prove heaven and hell.  While this passage does talk about those things, the main point is far more about the relationship between his people and the world.  Here he describes what our relationships are to be like.