One sentence in that link really jumped out at me: "We were freely justified when we FIRST came to the Lord
in our brokenness, and we are freely sanctified by continuing to trust that God will sustain us throughout our lives."
As I mentioned before, this belief that, once one comes to salvation/ETERNAL life, that such a person could subsequently LOSE that salvation (which is initiated, nourished, sustained, and eternally guaranteed,
ALL, by the Lord), in IMHO, is widely and successfully utilized by the devil to build anxiety, fear, uncertainty, and mistrust of God into believers. Why? Because it keys salvation's permanence upon a believer, as opposed to (correctly) upon God. And the more we struggle with sin, the more aware we are of our mortal fallibility, the more successfully the devil deploys and exploits his use of the insecurities believers have, due to this false, extremely harmful belief. After some period after salvation, ALL Believers can look back to when they were saved, and despite so much growth and work remaining, despite their current struggles against sin, they can see how far they have come, of just precisely how messed up they were before being saved. And yet, at that moment of salvation, every messed up new Christian is FULLY justified in Christ. But the devil wants us to think that God thinks and reacts to us as do men. I sometimes think just how much God loves us, of just how much He wanted to save us, when I think of the tribulations of Jesus, even to a horrific death. He is NOT about to waste the unfathomable cost and what was accomplished due to the frailties of our own personal resolve and inability to avoid sin. He did NOT save His children only to risk them potentially being killed while they're "playing in the street." He's made sure of THAT!