Cross reference
John 6:25
25 and having found him on the other side of the sea, they said to him, `Rabbi, when hast thou come hither?'
John 1:38-39
38 And Jesus having turned, and having beheld them following, saith to them, `What seek ye?' and they said to them, `Rabbi, (which is, being interpreted, Teacher,) where remainest thou?'
39 He saith to them, `Come and see;' they came, and saw where he doth remain, and with him they remained that day and the hour was about the tenth.
Matthew 23:7
7 and the salutations in the market-places, and to be called by men, Rabbi, Rabbi.