Goliath was a big dude, 6 cubits and a span, or about 9 feet 9 inches.
Or was he?
The Septuagint version of the bible and the dead sea scrolls, on the other hand, both state his height as 4 cubits and a span, or 6 feet 9 inches.
His armour weighed a bit over 40 kg, about the same weight as a modern soldier would carry. His spear sounds impressively heavy at 600 shekels, however , this is only about 6 kg (13 lbs), easily carried by a man of average strength, let alone someone with training.
The difference lies in whether we should believe the Masoretic version of the bible, or the Septuagint.
The Masoretic text was written about 1000 years later than the Septuagint and it is what the New World Translation and a lot of Protestant bibles are based on.
Although the Septuagint was accepted by 1st century Jews, it is believed that medieval Jews were not happy with the Septuagint, as it lent weight to the argument that pointed to Jesus as the messiah and they wanted to distinguish the Jewish tradition from Christianity.
Jesus and other new testament writers (whoever they were) quoted the Septuagint.
In an effort to support his own world view and to distance himself from the Catholic Church, Martin Luther chose the Masoretic text over the Septuagint on which to base his translation, which is ironic as the Masoretic text was written, partly to separate itself from Christianity.
When someone says they 'believe the bible', or, they 'live their life on what the bible says'- can that person really explain how they can trust the history and process of whatever bible they believe in came to be?
This is just a quick overview. Im sure there are many on this site that could explain this topic more clearly. It really grates me that so many people around the world are fed this stuff without question and are taught their way is the only right way.