why is the expression "watcher" not in the christian lexicon when it appears repeatedly in the book of Daniel?

https://www.biblegateway.com/passage/?search=Daniel%204%3A12%2D14&version=KJV

i did not expect to see that after reading Apocalypse of Yajnavalkya but there it is

#biblestr  

oops, the catholics forgot to notice that one!