Faith Alone in Christ Alone

This is Jesus confrontation with the religious leaders where He tells them specifically that they are not the spiritual children of Abraham, they are not His disciples, they are not the children of God, because His word has not place in them. He tells them that they have another father that they listen to and do what he wants and, after they insult Him and deny the truth, He tells them that their father is the devil and they do his bidding. Jesus concludes by telling them they don't hear or listen to His words because they are not of God. The principle application is salvation and sanctification by works and self-righteousness or by faith in Christ alone. What is your security in?