Sons of God
Some have attempted to date this section of 1 Enoch to around the 2nd–1st century BC and they believe this book is based on one interpretation of the Sons of God passage in Genesis 6, according to which angels mated with human females, giving rise to a race of hybrids known as the Nephilim. The term "irin" is primarily applied to disobedient watchers who numbered a total of 200, and of whom their leaders are named, but equally Aramaic "iri" ("watcher" singular) is also applied to the obedient archangels who chain them, such as Raphael (1 Enoch 22:6).