From the Bible, King James Version, Matthew 5, 31-32: “It hath been said, “Whosoever shall put away his wife, let him give her a writing of divorcement.
“But I say unto you that whosoever shall put away his wife, saving for the cause of fornication, causeth her to commit adultery: and whosoever shall marry her that is divorced committeth adultery.”
Here we can plainly see that Jesus not only supports divorce in the case of adultery, but also explains clearly that divorce papers are to be filed.
I trust that clears up any remaining confusion.