In the Revelations of St. Bridget, Mary is called the star going before the sun. By which we are to understand, that when devotion to the Divine Mother first dawns in a sinful soul, it is a certain sign that God will soon come to enrich her with his grace.
…St. Bernard gives us this advice: If you do not wish to be overwhelmed by the tempest of temptations, do not turn your eyes from this star of salvation. And then he adds: Following Mary, you cannot go astray; if Mary protects you, you cannot fear being lost; if Mary favors you, you will arrive at paradise.
-From the Glories of Mary by St. Alphonsus de Liguori