Yes very good scriptures, but I wasn't really debating whether God is our Father, I thought that was pretty much accepted by almost all of Christianity, isn't it? Most certainly God is our Father, hence we refer to Him as God the Father; He is not just a Father but our Father, the Father of all men and women, good or bad.
When Jesus is saying to these people that they are not of God, I don't think he is saying they are not children of God, Jesus is saying they are serving Satan instead of God, hence Satan becomes their father, instead of their true Father who created them, who is God.