Usually a person enjoys a better reception a home than anywhere else, except if he has attained an exalted position, in which case the opposite is often true. Jesus could not do many miracles there because to do so was contrary to His mission. He did miracles to create and to strengthen faith in Himself. When settled unbelief reigned, there was no point in doing miracles. [source][source][source]
The point of this section is to show that even those who knew Jesus best refused to believe on Him. [source][source][source]
"Jesus led a perfect life and still had family members and friends who struggled to believe. Sometimes those most difficult to reach are those who know us best." [1][source]