To the question of what is an evangelical?
An evangelical is a plain, ordinary Christian. We stand in the mainstream of historic, orthodox, biblical Christianity. So we can recite the Apostles Creed and the Nicene Creed without crossing our fingers. We believe in God the Father and in Jesus Christ and in the Holy Spirit.
For evangelical people, our authority is the God who has spoken supremely in Jesus Christ. And that is equally true of redemption or salvation. God has acted in and through Jesus Christ for the salvation of sinners.