Jesus turned, and saw them following, and said to them, "What are you looking for?" They said to him, "Rabbi" (which is to say, being interpreted, Teacher), "where are you staying?"

 Here we meet another of John's key-words--darkness (skotos, G4655, skotia, G4653) . This word occurs seven times in the gospel. To John there was a darkness in the world that was as real as the light. 