Palm Sunday is recognized as the day Jesus entered Jerusalem before his crucifixion on Good Friday. That Sunday is traditionally the start of Christianity's Holy Week, and many churches commemorate the day with special services.
In the Bible, the four gospels of Matthew, Mark, Luke and John describe that as Jesus came into Jerusalem for the last time before he was crucified, the crowds waved palm branches and laid them on the ground before him. People in the city celebrated his return because of the miracles and works he had performed. They worshipped him and cried out for him to save them.
Palm Sunday is the Sunday before Easter, and it is also the beginning of the last week of Lent. Holy Week begins on that Sunday, which is also called Passion Sunday. Christians remember and celebrate the sacrifice of Jesus during that week as they prepare to honor his resurrection on Easter.
Many churches commemorate Palm Sunday by decorating with palm leaves, having a procession, wearing red vestments, feasting and holding special services to honor Christ's commitment to his people. Some churches save their palms leaves to be burned for use during the following year's Ash Wednesday services. The day is often used as a way to help people remember the road Jesus took to the cross that led to salvation for the world.