Thanks, I appreciate your nice comment.
You are right, that it is a given that if you have faith from God, you will do good works (ie action). It is evidence of faith, not a way to make sure your salvation is secure. God saving us never required our cooperation - He gives us the very faith and opens our ears to hear, and believe in Him. He paid for our sins in full, a payment we could never pay back. He gives us our faith, He pays our sin debt completely, He does it all for us because what He does for us is what we never could have done for ourselves, not one bit.
I like the illustration that sin is a vertical line between sinful, natural man and God. It divides us from Him, and there is no way we can step over that line on our own. Scripture affirms that our own sin nature is inherently repelled by the things of God.
Then Christ comes along, the man who lived a perfect life, and gave His life as a payment for our sin. Christ is represented by a horizontal line between God and man. He is our redeemer, who bought us with His blood, and brings us back into communion with God - Christ does what we sinful, natural man could never do - give us a bridge back to God. This is what I see when I look at the cross.
Selah! We have a Mighty Savior.