Palm Sunday, which occurs during the Lenten season that began on Ash Wednesday, is celebrated seven days before Easter. It is considered the start of 'Holy' or 'Passion' Week. Observed by Roman Catholics, Anglicans, Lutherans and many Orthodox Churches, it celebrates the triumphant entry of Jesus into Jerusalem. The justification for celebrating Palm Sunday is found in the gospel accounts. Some denominations teach that, early on a Sunday morning, Jesus left Bethany and went to Bethphage. In Bethphage he mounts a colt and journeys to Jerusalem, which fulfills Biblical prophecy (Zechariah 9:9).