"сказано "рука". Интеретация этого слова как "мужской орган" мне неизвестна - дальше можно спекулировать, исходя из контекста"

http://scripturetext.com/isaiah/57-8.htm

thou lovedst their bed where thou sawest it

whose bed thou lovedst, whose hand thou sawest

thou lovedst their bed, thou sawest their nakedness

You have loved their bed, You have looked on their manhood

you have pleasure with in bed. You've seen them naked

Похоже, "рука" - это таки оно самое :-)