Anakin is derived from the Judeao-Christian stories surrounding Giants in the Bible.

Anakim (or Anakites) are the descendants of Anak, and dwelt in the south of Canaan, in the neighbourhood of Hebron. In the days of Abraham, they inhabited the region later known as Edom and Moab, east of the Jordan river. They are mentioned during the report of the spies about the inhabitants of the land of Canaan. The Book of Joshua states that Joshua finally expelled them from the land, excepting a remnant that found a refuge in the cities of Gaza, Gath, and Ashdod. The Philistine giant Goliath, whom David^[44] later encountered, was supposedly a descendant of the Anakim.^{[citation needed]}

The land, through which we have gone to spy it out, is a land that devours its inhabitants, and all the people that we saw in it are of great height. And there we saw the Nephilim (the sons of Anak, who come from the Nephilim), and we seemed to ourselves like grasshoppers, and so we seemed to them.

—^[45]

It is more commonly suggested by traditional Jewish sources (such as the Midrash) that the spies saw large and powerful inhabitants in Canaan and because of their own fears, cowardice, and inadequate faith in Yahweh, saw themselves as grasshoppers in the eyes of the Canaanites, whether they were actual "giants" or not.^{[citation needed]}

http://en.wikipedia.org/wiki/Anakim#Anakim