One of the themes of Advent “waiting”. God values patience, and a lot of our sanctification comes through waiting. When God does something He often starts very small — like a farmer planting a seed. Many times what He is doing is hidden. But God is very patient, and He calls on us to wait. He has a lot to teach us in times of waiting.
Hebrews 11:1, 6
1 Peter 1:6-7, 9