Simple Definition:
Advent is a period of time that Christians observe before Christmas. It is a time of preparation and anticipation for the coming of Jesus Christ. During Advent, Christians reflect on the significance of Jesus’ birth and his promise of salvation. They often use an Advent calendar to count down the days until Christmas and light candles on an Advent wreath to mark each week leading up to Christmas. [salvation: being saved or rescued from harm or danger]
Example 1: During Advent, Christians attend church services and pray to prepare themselves for the celebration of Christmas.
Example 2: Many families have an Advent calendar with little doors that they open each day in December to reveal a small gift or treat.
Very Simple Definition:
Advent is the time before Christmas when Christians get ready for the birth of Jesus. They do special things like lighting candles on a wreath and opening doors on a calendar.