Easter is the Sunday that celebrates the resurrection of Christ, and is one of the most holy days in the calendar of Christian churches. The Easter message is one of hope and victory over death, for it recalls that Christ rose from the dead on the third day after his crucifixion. Easter symbolizes the love of God and the promise that man's soul is immortal. In many languages, the name for Easter comes from the Hebrew word "pesah", or passover; in fact, Easter was first associated with the Hebrew festival of the Passover, which falls in the spring. Easter was celebrated at different times by the early Christian churches until 325 A.D., when the Council of Nicaea fixed the day as the first Sunday after the first full moon after March 21. This always places Easter sometime between March 22 and April 25. It is believed that the council probably set the date of Easter to fall near the time of a full moon so that pilgrims journeying to worship a shrine might have moonlight to help them find their way.