Some think the death of Christ saved them from a whipping. Just the opposite. Christ led us to His cross (woodshed) and without our permission we got our 'upcoming'. The punishment for sin is death and we experienced that death in Christ but never felt it. Not just a death but an eternal death was executed on every soul attached to sin. God knew nothing but a total death could separate us totally from sin. To be safe sons in eternity God wants SONS not 'try harders'. But how could He do that?
"I have been crucified with Christ; and it is no longer i who live, but Christ lives in me; and the life which I now live in the flesh I live by trust of the Son of God, who loved me and gave Himself up for me." (Galatians 2:20, DLT emphasis mine)
So then, what is salvation? Christ, He Himself, nothing more and nothing less. That old you was crucified with Him and that you remains dead. Hallelujah! Dead to which you? To the you defined by its union to the spirit of disobedience to God. But now you obey, those who trust this message is true. You are joined to Christ...what more could you want? Those who submit to this truth know, experience, live out of this new union of their soul attached to Christ. Death has worked out their salvation.