My instant answer: LOL! (Without reading the thread.)
Because St. Luke tells the complete story of the Blessed Virgin Mary.
Now, I’ll go back and read the thread. LOL!
**A priest, who helped us write this book, said of St. Luke, "He was Our Lady's first troubadour." Only to Luke did Mary reveal the Magnificat, which contains the noblest words in any literature. He loved her above all the women he had ever loved.**