Easter is one of the principal holidays, or feasts, of Christianity. It marks the Resurrection of Jesus three days after his death by crucifixion. For many Christian churches, Easter is the joyful end to the Lenten season of fasting and penitence. The earliest recorded observance of Easter comes from the 2nd century, though it is likely that even the earliest Christians commemorated the Resurrection, which is an integral tenet of the faith.