Not exactly. He has been on this subject for the last 3 days. On days 1 & 2 … he premised OSAS as conditional. Perseverance is absolute part of the equation. [OSAS = Rebirth in H.S. + Perseverance ------ to the final curtain call]
And, he doesn’t say the OSAS will not fall back into serious sin. He admits that happens. But, these Prodigals will repent, and return to their first faith/love. Until they do repent, they will never deny Christ & their rebirths. This is the key differentiator of a wayward sheep from an unsaved goat.
Finally, he premises his belief primarily on 1st Chp. Peter and John’s Gospel, Chp. 10:25-30. Catholic must admit that Christ is definitive on not losing ALL the Father had given to him. Yes, it applies to the 11 Apostles, but then in John’s Gospel, Christ binds all other Christians to this promise [making the promise a timeless guarantee].
I don’t think we should fault John Mac or those Protestants who believe OSAS … provided they qualify this teaching to include perseverance, and allow that there will always be pretenders, w/o enduring discipleship … who will tolerate sinning easily. They may not be discovered til the end … like Judas.
Was Judas a non-believer, pretender … or a saint who lost his wings on his last day? Even if we argue as Catholics he was saved / then lost, ------ Protestants could say it doesn’t invalidate their OSAS belief, since he didn’t persevere to his last day. Its our ending that matters … for both Catholics & Protestants [at least those holding John Mac’s soteriology of OSAS].