they are some hardcore judo christian gooks saying they are chosen people like jewish people because the name of the first ever country built on korean territory was (((coincidentally))) (go)-choseon, which just sounds like "chosen" in english, and then repeat that with no reference to at least bible or anything else . stupid fucking gooyiks thinking they can Ever be on the same level as the jews. 
long shit short, the real meaning is in its chinese name/translation (朝鮮), too lazy to find it on wiki.