Samuel Book 1-Chapter 18-30

Seeing how this is a lot of reading, there are a couple of things I want to say.

First of all, I had always thought that David was the son of Saul. However, according to the bible, he is the son of Jesse, the Beth-lehemite. Not only is he not Saul's son, but it turns out that Saul despises David because of his jealousy. That kind of reminds me of Hera, and her hate for Zeus' lovers.
Secondly, in regards to the size of Goliath, I always thought that he was really about 6'7 or something and only seemed a giant because of the shortness of people in the past. It turns out, when I did the conversion from cubits to feet, that Goliath was at least 9 feet tall according to the bible. Therefore, if this story is true, Goliath was a giant.
Thirdly, I always thought that David became king in a time of crisis when Goliath terrorized the city. In reality, according to the bible, Goliath was nothing but a soldier. He was just part of a war between the Philistines and the Israelites. It reminds me of the movie, TROY, when Agammemnon calls Achilles to fight against the giant from the enemy. Even though it's different because David wasn't the incredible, half-god soldier that Achilles was, it is pretty much the same concept.
Another thought that I had while reading this occurred to me in the part when Saul gives his daughter to David to wed. This is not the first time in literature that this happpens. In a lot of old books, a worthy warrior or noble who has done something incredible gets the King's daughter's hand in marriage. However, supposing these stories were real of course, what if the princess was ugly? What if she was unkind and simply impossible to be around? Could the said person reject the princess? Could he be able to tell the King that he can't marry his daughter?