Jesus talked about families and houses to explain where his power came from. Jesus wasn’t part of Satan’s family or kingdom. Satan is another name for the devil. Jesus’ power didn’t come from Satan.
Satan was the strong man Jesus described. Jesus talked about tying up the strong man and stealing from his house. Jesus was talking about how he came to free people from sin and evil.
Jesus said that God forgives all sin except when people speak evil against the Holy Spirit. This is the sin of claiming that Jesus’ power doesn’t come from God’s Holy Spirit. This can’t be done by mistake. A person must make a choice to do it.
When someone makes this choice, they choose not to believe in Jesus. They choose not to love God. Someone who believes in Jesus and loves God can’t speak evil against the Holy Spirit. They know that Jesus’ power comes from God’s Holy Spirit. They obey God and follow Jesus. Everyone who does what God wants is part of his family.