The main idea in Evensong is the celebration of the incarnation of Christ: this is the story about Christ coming to the world in the form of a person and living among people. The words of the Magnificat and the Nunc Dimittis are always used in the service. The Magnificat is the song that Mary sang when she was told that she was going to have a baby who would be God’s son. The Nunc Dimittis is the song that was sung by the priest Simeon who had been promised by God that he would live long enough to see Jesus. Both these sets of words are from the New Testament.