 i've said this many times jesus defeated the devil in the desert by quoting scripture that devil said makes make bread out of these stones you must be hungry after fasting for 40 days and jesus said it's not by bread alone that you live but every word that comes from the mouth of god and so on he quoted scripture and thus defeated the devil and when we say the rosary we're quoting scripture saying hail mary full of grace is the angels greeting to our blessed mother reminding the devil that god so loved the world