David is born to fight, he is a true viking. You cannot disregard the ancestry. Potential Einherjar, he is carefully preparing his honorable place in Valhalla, right next to Odin.
P.S. Cannot resist, I have to recommend this: http://www.imdb.com/title/tt0862467/. If you can handle this, watch to the end, and actually enjoy, you would never mess with David again 
Looks interesting, gonna watch it. Thanks
Have you seen Chappie? Marvelous movie. At first half of movie I was like 'no you bastards why do you teach him bad things, to fight and be a gangsta' but then...
No, I didn't listen about 'Chappi'. Will check it out!
BTW, I want to warn you regarding the 'Valhalla Rising', so you don't blame me later.
It is one of the hard-to-watch movies, you may well fall asleep watching that

. When I first watched it, I cannot tell I really liked it, but the amazing part was - I remembered it much better than anything else I have watched at that time. It reminds of the 'aftertaste' effect to good wine. And it looks to be the most 'historically correct' movies I have seen.
You are either gonna love it, or hate. Latter is more probable, especially if you are from US, and used to high-dinamics movies.