 verses 9 to verse 20, or the words of Mark, Mark 16, 9 to 20, are not in the original text, rather they are a later edition. Suffice it to say that I am convinced they are part of the original. In fact, 99% of the Greek manuscripts do contain this as part of the original, and the reasons for saying it is not, I think, are spurious. So, both of these passages are the Word of God.