Because Constantine upgraded Jesus’ status almost four centuries after Jesus’ death, thousands of documents already existed chronicling His life as a mortal man.
Not only was she the woman to whom Jesus had assigned the task of founding the Church, but she also had physical proof that the Church’s newly proclaimed deity had spawned a mortal bloodline.
"My dear," Teabing declared, "until that moment in history, Jesus was viewed by His followers as a mortal prophet… a great and powerful man, but a man nonetheless.
"As I mentioned," Teabing clarified, "the early Church needed to convince the world that the mortal prophet Jesus was a divine being.
The Church, in order to defend itself against the Magdalene’s power, perpetuated her image as a whore and buried evidence of Christ’s marriage to her, thereby defusing any potential claims that Christ had a surviving bloodline and was a mortal prophet.