Mark 6:4

‘And Jesus said to them, “A prophet is not without honour, except in his own country (patris 'autou as in Mark 6:1) and among his own kin and in his own house.”

This may be a general saying rather than a specific claim to be a prophet, although others unquestionably saw Him as one, and it does indicate that Jesus would not shy from the title. But the gist of the saying is clearly that ‘familiarity breeds contempt'. A comparative saying is found in the later, non Biblical, Oxyrhynchus papyrus, ‘A prophet is not accepted in his own country, nor does a physician work cures on those who know him.'

‘Among His own kin and in His own house.' This may well have been Jesus' addition to the saying, emphasising that as yet His own family did not believe in Him.