What is the book of Jasher?
The book of Jasher is an “extra-biblical text” and is one of many we have today. It is like a history book, but is called apocryphal (of doubtful authenticity). The validity of the book of Jasher is impossible to determine, and the copies printed today cannot be proven to be true.
For those who believe the Bible, it is the only canon scripture, and 2 Timothy 3:16 says “All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness:” The Bible is also a history book, but is the one source of information that cannot be questioned.
The book of Jasher is mentioned twice in the Bible. Joshua 10:12-13 says, “Then spake Joshua to the Lord in the day when the Lord delivered up the Amorites before the children of Israel, and he said in the sight of Israel, Sun, stand thou still upon Gibeon; and thou, Moon, in the valley of Ajalon. And the sun stood still, and the moon stayed, until the people had avenged themselves upon their enemies. Is not this written in the book of Jasher? So the sun stood still in the midst of heaven, and hasted not to go down about a whole day.” (The book of Jasher is mentioned one more time in the Bible; see 2 Samuel 1:17-18)
Before continuing where in the book of Jasher I found my answer, we must first work our way backward along the genealogy of the eight survivors of the flood (Noah, his wife, his three sons Ham, Shem, Japheth and their wives) to see whom the giants descended from. Remember the Emimites, the Zuzimites, the Rephaimites and the Anakim? Remember Deuteronomy 7:1 (“When the Lord thy God shall bring thee into the land whither thou goest to possess it, and hath cast out many nations before thee, the Hittites, and the Girgashites, and the Amorites, and the Canaanites, and the Perizzites, and the Hivites, and the Jebusites, seven nations greater and mightier than thou;”) referring to more giants? These people all are related. If you look at Noah’s son Ham, he had one son named Cush. Cush had four sons – Nimrod, Mizraim, Phut and Canaan. All of whom God commanded Israel, to annihilate.
Now, where in the book of Jasher does it say, monsters were real?
Jasher 4:18 says, (referring to the same time as the Genesis 6:4 pre-flood account) “And their judges and rulers went to the daughters of men and took their wives by force from their husbands according to their choice, and the sons of men in those days took from the cattle of the earth, the beasts of the field and the fowls of the air, and taught the mixture of animals of one species with the other, in order therewith to provoke the Lord; and God saw the whole earth and it was corrupt, for all flesh had corrupted its ways upon earth, all men and all animals.”
Regarding the validity of the book of Jasher, my argument was that if Joshua (the mighty warrior and spiritual leader) were to use the book as a sort of authenticity to have those believe him (“was it not written in the book of Jasher?”) then it must be true. (One very important key to realize is that the book he was referring to, may not be the same exact book we have today Regardless, continuing the interpretation of “the sons of God” in Genesis 6 as the Nephilim, (the fallen angels came down and bred half angel/half human giants) and if the book of Jasher’s account of the mixing of species of men and animals were true; this opens the door to all mythology. Throughout all mythology, Greek examples to be specific, hybrid creatures are found such as centaurs, Medusa and of course the famous Minotaur.
Why did the genealogy of the giants matter?
Ham’s great-great grandson’s name was Caphtorim. (He is affiliated with the iconic Goliath who fought for the Philistines, the giant David killed; Caphtor also became a location). In Amos 9:7 it says, “Are ye not as children of the Ethiopians unto me, O children of Israel? saith the LORD. Have not I brought up Israel out of the land of Egypt? and the Philistines from Caphtor, and the Syrians from Kir?” Jeremiah 47:4 says, “Because of the day that cometh to spoil all the Philistines, and to cut off from Tyrus and Zidon every helper that remaineth: for the LORD will spoil the Philistines, the remnant of the country of Caphtor.” Guess where scholars think Caphtor is? Crete – the home of all Greek mythology.
When looking at the early Greek history, there is a connection. “The earliest cultures of Europe developed along the shores and on the islands of the Aegean Sea and are known as the Aegean Civilization. Chief among these cultures were those of the Minoans on the island of Crete, the Mycenaeans on the Greek mainland, and the Trojans of the city of Troy and its surrounds along the Hellespont in Asia Minor…… A single poet has never had such an influence on the thinking of a people as Homer had upon the Greeks. Little is known about Homer, but he probably lived during the 700s B.C., perhaps on the island of Crete or in the city of Smyrna.”
Early Greek Mythology, influenced by well-known storytellers like Hesiod and Homer, came from that exact region! A mythology is a collection of myths, especially one belonging to a particular religious or cultural tradition. Perhaps the inception of these ancient myths that we know and love even to this day had a very real truth behind them!
 Combee, Jerry, and George Thompson. History of Civilization. Pensacola: Beka Book, 2013. Print.