Easter is a 2,000-year-old Christian holiday that celebrates the resurrection of Jesus Christ and marks the arrival of Spring. The Sunday before Easter is called Palm Sunday. It commemorates and celebrates the day Jesus arrived in Jerusalem when his followers greeted him by laying palm leaves at his feet to demonstrate their reverence for him. In many churches, the observance of Easter begins on the night of Holy Saturday, just before Easter Sunday. This religious service is known as the Easter Vigil. According to Eastern Orthodox Christianity, the Great Lent, which begins 40 days before Easter on Clean Monday, marks the beginning of the Easter rituals. The 40 days, which do not include Sundays, are a time of repentance, fasting, and commemoration of the biblical events leading up to the persecution, crucifixion, death, and resurrection of Jesus Christ. The last week is known as Holy Week and is concluded with Maundy Thursday, Good Friday, Holy Saturday, and Easter.  The origins of the concept of the Easter bunny have been disputed, but many agree that it started in Germany. Either way, the kids always look forward to his arrival, and decorating eggs, consuming candy, and community Easter egg hunts have become a huge part of the evolved Easter holiday.