The topic is the salvation of Catholics. Catholics who practice repentance, reformation and regeneration are saved. Their process doesn't matter a wit.
MacArthur preaches 'Eternal Security' based on some 'new birth' which consists of nothing more than shouting 'I believe in Je-sus' and going on their merry, hateful ways. Sorry, the good Muslim, Hindu or Buddhist with inherit heaven before these misguided 'goats'.
Ignore the Lord at your own peril. Christ's merit on the cross will not save you. Repentance and changing your own life will. It takes WORK, not lip service.
Only God knows who will be saved or not. That is not for you to decide. One of the many things that Jesus was clear about was/is his disdain for the pharisees. They thought they were religiosly superior because they felt they practiced the letter of the law, and forgot about the spirit of the law, which is brotherly love. I think it is important that we be humble, especially in God’s eyes. Those that pretend to be God are likely to be the ones in trouble.