You also, as living stones, are built up as a spiritual house, to be a holy priesthood, to offer up spiritual sacrifices, acceptable to God through Jesus Christ.

 (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. 