Advent is about heaven coming to earth in Jesus Christ. This breaking in happened in the past in the incarnation. It will happen in the future in the grand culmination of all things at the return of Christ. And it is happening now in the lives of Jesus-followers. Jesus has sent his Spirit into our lives. Heaven is always invading our space. We are agents of the Presence. Our words and works can have supernatural impact.
You'll have to come to the Cornerstone on Sunday to hear a fuller explanation of all this. It is absolutely thrilling and it changes everything.
In the meantime, have a listen to Come to the River. This song captures the idea of heaven invading our lives.