and, "A stone of stumbling, and a rock of offense." For they stumble at the word, being disobedient, whereunto also they were appointed.

 (a) Logos ( G3056) is the great Stoic word for the reason which guides the universe; logikos ( G3050) is a favourite Stoic word which describes what has to do with this divine reason which is the governor of all things. If this is the word's connection, clearly spiritual is the meaning. 