The Rosary is the weapon against evil from a Catholics stand point, it’s Mary who crushes the serpents head after all. The originations of the Rosary was in the 13th century when the Blessed Virgin appeared to St Dominic and introduced it to him, beyond that I don’t know more.
Evil hates Mary because it can’t stand that a earthly born women was chosen by God to bare our Lord.
The Catholic Church doesn’t require people to pray it, saying that since I have started to pray it daily it’s changed my life for the better.
Mary is the
Woman in Genesis 3:15. Mary is considered the New Eve. Eve brought forth sin into the world while Mary brought forth salvation through Jesus Christ. That's why with the oldest and earliest translation of the bible Genesis 3:15 states God speaking to the serpent and saying "I will put enmity between you and the
Woman, between your(devil) seed(demons) and Her(Mary) seed(Jesus), She will crush your head(by giving birth to our savior) and you will lie await for her heel.
The word
Woman is very important in biblical text, it's not just a normal woman but the "biblical Woman" is gospel centered woman, she is created, redeemed, blessed and gifted to be a blessing to those around her. Jesus uses the word
Woman in reference to Mary even in the new testament...Jesus responded to Mary his Mother.."
Woman,what concern is this to us?" John 2.
In Revelation 12: "A great sign appeared in heaven: a
Woman clothed with the sun, with the moon beneath her feet, and a crown of twelve stars on her head. She was with child and about to give birth... She gave birth to a son, a male child who is destined to rule all the nations with an iron rod. And her child was taken up directly to God and to his throne.... Then the dragon(devil) became enraged at the
Woman and went off to wage war on the rest of her offspring, those who keep God’s commandments and bear witness to Jesus.
The Woman in Revelation is also Mary. The text says she gave birth to a male child who is to rule the world with and iron rod(this can't be anyone else except Jesus, so the Woman has to be Mary because she gave birth to Jesus). The text also says the devil couldn't get to the Woman because she was protected, so the devil left the Woman and went to make war with the rest of her offspring, and the text tell us who her offspring(children) are. The text says her offspring are those who keep God's commandments and give testimony to Jesus Christ who are known as Christians. So from the text Christians are Her children because Christians keep God's commandments and give testimony to Jesus.
The Woman(Mary) is part of God's plan of salvation from the beginning in Genesis right to the end in Revelation. Why is it God's plan? Because God not only wants to give us himself as a heavenly Father but also wants to give us a heavenly Mother who will forever pray and intercede for us. God doesn't just do things for no reason, he could of easily sent Jesus to earth in a flash of light or break through the clouds and appear, but that wasn't his intention. It's His plan to give us a mother and one who will be the opposite to Eve.
"Never be afraid of loving the Blessed Virgin too much. You can never love her more than Jesus did" - St. Maximillian Kolbe