Read all Four Books...
It is always good to remember...
That said - The Books get about 80% of what is true. Setup, Adminstration and description of Powers and Principalities are accurate. It is also accurate about the Trinity and Triune Nature of the Creation as well as its Makeup (
7 Superuniverses rotating around an 8th Central Superuniverse). That said - The Rebellion is also a good account of why Lucifer, Satan, Caligastia, Daligastia and the Midwayers fell from Their former estate...
That stated - The Origins of Mankind - The exclusion of Edits made to Us - and the Nephilim and It's Issues are concoctions/made up within the Book(s). These Items or Issues within them (The Books) should bear further Discernment by those Who read the Urantia Book(s)...