AD69, Mark wrote his Gospel. Provably. To play these videos in order: channel . Sorting: click on 'Browse This Channel', then 'Videos'.
GIST: Mark's own Gospel text proves he's THIRD. This channel/playlist continues the Youtube Mark series videos after Episode 4e, and contains all Episodes excluding 5 and 6. Those latter two in Youtube, need revision. Youtube playlist is here: http://www.youtube.com/playlist?list=PL358C20D575D1B580 .
Series progressively shows why a) the 'Q' aka 'Quelle' Gospel claim, is a lie; for b) Bible proves Mark is 3rd Gospel. Synoptics playlist (still unfinished) is in tandem; Mark's 'wrapping' style (here, Episode 3) is there covered in more detail.
To their credit, for centuries 'conventional' Christian scholarship didn't buy into 'Quelle' claims. Yet the vocal bad apples have been around since 1800s; for a few of the (ahem) 'Church Fathers' thought there was some original unknown 'gospel' from which the writers 'copied'! Yeah, the Holy Spirit just couldn't give them the info directly?! In short, they didn't believe in Verbal Plenary Inspiration, the Cornerstone of our claim that the Bible is.. the Word of GOD (Hebrews 4:12, 2Peter1:20, etc). Wow.
Too bad the Quelle people, so hot on cutting-and-pasting together an 'original' Gospel which no Gospel writer ever knew, didn't do their homework on how to read serial literature. Like, the Bible. Ooops.
For even today, if you watch some TV series like Buffy the Vampire Slayer, Angel, or Grimm; or, if you read any of Dickens' books (which were all serially published per section); or today, 'The Green Mile' by Stephen King; you'd know how each successive 'episode' or 'book' ties BACKWARDS to what went before.
So too, Scripture. Trick is to know WHEN each book was written. You know that in Bible, by two types of text identifiers: 1) a DATELINE in the meter of each book, usually at the beginning, but sometimes in significant chapters, too; and 2) KEYWORDS, quotes, and THEMES of the (usually-latest) books referenced.
Example: if I mentioned Hexenbeist, you wouldn't know what that was, until several episodes into Season One, of 'Grimm'. But after it was introduced, you'd both have a specific idea of the term, and know WHO in the series, was one. Same, for Bible; you'll not see the term 'the Christ' in any OT passage prior to Daniel 7. After Daniel 7, you see much more wordplay; but the phrase is never used again, until the NT. So too, for 'Day' being figurative. It's never figurative in Bible, EXCEPT in the phrase, 'Day of the Lord', which wasn't used until Isaiah (playing off Moses' Psalm 90).
Scholars do know about keywords and thematic ties, but they never think to use those techniques, on the NEW Testament writers quoting each other. Of course, the dippy 'scholars' think the writers borrowed existing material, instead of getting their information (AND how to write it) directly from the Holy Spirit. Yikes!
For scholars know that writers quote prior Bible in their books, yet suddenly are clueless when Mark does that. The shortness of Mark's Gospel is due to the fact a) it's the THIRD one, and b) it's a hurried reminder why God soon (within 18 months) destroys the Temple. It's written in the Year of the 4 Emperors. See Episode 5a and 5b of the 'Royal Family of God' videos for the background.
Scholars also don't know about the meter dateline, because they impose Western standards of poetry meter on Bible text, thereby find nothing; so they conclude Bible has no meter of its own. But everyone in the ancient world memorized Bible and other text by SYLLABLE COUNTS, so it should have been obvious that some kind of ACCOUNTING meter system was used. To demonstrate how that system works, I've compiled playlists; see the 'How God Orchestrates Time' section on my channel pages.
Thus you know there's no such thing as a 'Q' gospel which inept or dishonest 'scholars', promote. 2nd video in this list proves the 'Q' proponents themselves TELL you that Q is a HOAX! Some famous scholars in Christendom, both ancient and modern, endorse this hoax! See: degrees are no guarantee of integrity or competence. Pity the GOOD scholars (they always exist, too) who must contend with the bad! Pray for scholars. Pray on behalf of authority, Romans 13. WE NEED THEM TO BE COMPETENT.