"In the Book of Revelation, the "great portent" of the "woman" (12:1) is accompanied by "another portent which appeared in heaven": "a great red dragon" (Rev 12:3), which represents Satan, the personal power of evil, as well as all the powers of evil at work in history and opposing the Church's mission. Here too Mary sheds light on the Community of Believers. The hostility of the powers of evil is, in fact, an insidious opposition which, before affecting the disciples of Jesus, is directed against his mother. To save the life of her Son from those who fear him as a dangerous threat, Mary has to flee with Joseph and the Child into Egypt (cf. Mt 2:13-15). Mary thus helps the Church to realize that life is always at the centre of a great struggle between good and evil, between light and darkness."