One of the reasons this article caught my eye was that Catholics continually mock OSAS (preservation of the saints) and accuse us of antinomianism ...and yes it seems Rome does have a problem with it
Galatians 5:4 ESV You are severed from Christ, you who would be justified by the law; you have fallen away from grace.
Matthew 7:21-23 ESV “Not everyone who says to me, ‘Lord, Lord,’ will enter the kingdom of heaven, but the one who does the will of my Father who is in heaven. On that day many will say to me, ‘Lord, Lord, did we not prophesy in your name, and cast out demons in your name, and do many mighty works in your name?’ And then will I declare to them, ‘I never knew you; depart from me, you workers of lawlessness.’
2 Peter 2:20-22 ESV For if, after they have escaped the defilements of the world through the knowledge of our Lord and Savior Jesus Christ, they are again entangled in them and overcome, the last state has become worse for them than the first. For it would have been better for them never to have known the way of righteousness than after knowing it to turn back from the holy commandment delivered to them. What the true proverb says has happened to them: “The dog returns to its own vomit, and the sow, after washing herself, returns to wallow in the mire.”
1 Timothy 4:1 ESV Now the Spirit expressly says that in later times some will depart from the faith by devoting themselves to deceitful spirits and teachings of demons,
Galatians 5:4 ESV You are severed from Christ, you who would be justified by the law; you have fallen away from grace.
Romans 11:19-22 ESV Then you will say, “Branches were broken off so that I might be grafted in.” That is true. They were broken off because of their unbelief, but you stand fast through faith. So do not become proud, but fear. For if God did not spare the natural branches, neither will he spare you. Note then the kindness and the severity of God: severity toward those who have fallen, but God's kindness to you, provided you continue in his kindness. Otherwise you too will be cut off.
1 Corinthians 9:27 ESV But I discipline my body and keep it under control, lest after preaching to others I myself should be disqualified.
1 Corinthians 10:12 ESV Therefore let anyone who thinks that he stands take heed lest he fall.