I am borrowing this fascinating bit of information from the very informative Art & Theology blog :
Disney animator Glen Keane on spiritual transformation: Last month’s theatrical release of Disney’s live-action Beauty and the Beast has sparked renewed interest in the 1991 animated classic. On one of the special features of the DVD/Blu-ray release of the animated version, I was fascinated to hear that Glen Keane—who animated the original Beast along with Ariel, Aladdin, Pocahontas, Tarzan, Rapunzel, and many other beloved Disney characters—is a Christian whose own story of spiritual transformation was the driving inspiration, for him, behind the Beast’s transformation sequence at the end of the movie. (Visual influences included Rodin’s The Burghers of Calais and Michelangelo’s slave sculptures.) In an interview, Keane described his approach to animating this climactic moment:
For me, it’s really an expression of my spiritual life. There’s a verse in the Bible that says, “If any man is in Christ, he is a new creation. Old things have passed away, and all things have become new.” I wrote that on my exposure sheet there as I’m drawing this, because it’s really about an inner spiritual transformation that’s taking place with the Beast. And I saw it as a parable of my own life—that I got to express that. It was sincere, it was real for me. It was very real for the prince. I don’t know that there’s ever an illustration more clear as to what really can take place in a person’s life spiritually than this animated character transforming from an animal to the prince.