God has built a highway for the people. This is such a safe and straight road that no one can become lost. This road of faith is what God gives to the people. Along it they shall travel to the promised land.
God gives the people not only natural sustenance, like water and plants. God also gives the people the faith by which to reach their destination.
The Advent story itself is like such a road. Each week provides a stop along the journey. At each stop are signs pointing to the culmination. If we rush by without making every stop, we will arrive breathless and exhausted at the end.