The dove (or pigeon) that changed the history of the world

A condensed study, a mixture of legend, reality, disbelief and humor, for you to reflect on your religious beliefs.
A young "virgin" appears pregnant. So far, there is nothing special.
The novelty is how and who claims to be on tape, since she has not had carnal relations, neither with her fiancé, nor with any other male. So, explanations have to be given. And his is, at least, cinematically original: "I was covered by a
dove, which was introduced to me by an Angel, who suddenly appeared in my house ... Ah, and said that it came from God ... "
Come on, what we call infidelity, with a simple excuse and easy to believe.
But, taking into account that we are talking about more than 2000 years ago, the incredible thing is not only that they did not stone the young woman, but, jokes aside, this legend, which we can believe or not, was the origin of the greatest empire ever created by man: The Catholic Church.