However, if we look at our text in its context, I believe that we can rightly divide it and gain an understanding of what Jesus is teaching concerning the blasphemy of the Holy Spirit. The first part of chapter 3 presents the background to Jesus' conversation with the Pharisees. The Pharisees had accused Jesus of casting out devils by the power of Beelzebub, the prince of the devils. There was no joy or praise offered to God by the so-called religious elite on behalf of the wonderful miracle that had been done. They only had contempt for Jesus.
Pride is a very self-destructive force.
Many people will lose their souls because of their pride. However, Jesus answered their accusations with logic, which was always a stumbling block to his accusers. And if a kingdom be divided against itself, that kingdom cannot stand. And if a house be divided against itself, that house cannot stand. This is true with any kingdom or government or even one's own house.