from now until the end of the world , you shall be called jonathan shadowhunter for you and your kin will drive the shadows of the world away and you will make light in dark places and you will be called nephilim , as it says in the book of genesis : `` the nephilim were in the earth in those days , and also after that , when the sons of god came unto the daughters of men , and they bare children to them : the same were the mighty men that were of old , the men of renown . ''