Things look different in church this time of year. We use blue or purple cloth and candles, and we have evergreen wreaths and garland. This time of year, when we start getting ready to celebrate Jesus' birth at Christmas, is called Advent.
Advent is a time of expectation. "Expectation" means "looking forward to something", and during Advent, we are looking forward to Jesus being born.
Feasting on the Word: Advent Companion, David L. Bartlett, Barbara Brown Taylor, and Kimberly Bracken Long, Editors.